Input TRS:
    1: a(lambda(x),y) -> lambda(a(x,1()))
    2: a(lambda(x),y) -> lambda(a(x,a(y,t())))
    3: a(a(x,y),z) -> a(x,a(y,z))
    4: lambda(x) -> x
    5: a(x,y) -> x
    6: a(x,y) -> y
Number of Rules: 6
Direct POLO(mPol) ... failed.