A=1 B=1 C=1  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=2 C=1  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=3 C=1  failure
        C=2 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2  failure
            D=3  failure
            D=4  failure
        C=3  failure
        C=4  failure
    B=4 C=1  failure
        C=2 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2  failure
            D=3 E=1  success
                E=2  failure
                E=3  failure
                E=4  failure
            D=4  failure
        C=3 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2 E=1  success
                E=2  failure
                E=3  failure
                E=4  failure
            D=3  failure
            D=4  failure
        C=4  failure
A=2 B=1 C=1  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=2 C=1 D=1  failure
            D=2  failure
            D=3  failure
            D=4  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=3 C=1 D=1  failure
            D=2 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=3  failure
            D=4  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=4 C=1 D=1  failure
            D=2 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=3 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=4  failure
        C=2  failure
        C=3 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=3  failure
            D=4  failure
        C=4  failure
A=3 B=1 C=1  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=2 C=1 D=1  failure
            D=2  failure
            D=3  failure
            D=4  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=3 C=1 D=1  failure
            D=2 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=3  failure
            D=4  failure
        C=2 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2  failure
            D=3  failure
            D=4  failure
        C=3  failure
        C=4  failure
    B=4 C=1 D=1  failure
            D=2 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=3 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=4  failure
        C=2 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2  failure
            D=3 E=1  success
                E=2  failure
                E=3  failure
                E=4  failure
            D=4  failure
        C=3  failure
        C=4  failure
A=4 B=1 C=1  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=2 C=1 D=1  failure
            D=2  failure
            D=3  failure
            D=4  failure
        C=2  failure
        C=3  failure
        C=4  failure
    B=3 C=1 D=1  failure
            D=2 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=3  failure
            D=4  failure
        C=2 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2  failure
            D=3  failure
            D=4  failure
        C=3  failure
        C=4  failure
    B=4 C=1 D=1  failure
            D=2 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=3 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=4  failure
        C=2 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2  failure
            D=3 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=4  failure
        C=3 D=1 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=2 E=1  failure
                E=2  failure
                E=3  failure
                E=4  failure
            D=3  failure
            D=4  failure
        C=4  failure