(0) Obligation:

Q restricted rewrite system:
The TRS R consists of the following rules:

__(__(X, Y), Z) → __(X, __(Y, Z))
__(X, nil) → X
__(nil, X) → X
U11(tt) → tt
U21(tt) → U22(isList)
U22(tt) → tt
U31(tt) → tt
U41(tt) → U42(isNeList)
U42(tt) → tt
U51(tt) → U52(isList)
U52(tt) → tt
U61(tt) → tt
U71(tt) → U72(isPal)
U72(tt) → tt
U81(tt) → tt
isListU11(isNeList)
isListtt
isListU21(isList)
isNeListU31(isQid)
isNeListU41(isList)
isNeListU51(isNeList)
isNePalU61(isQid)
isNePalU71(isQid)
isPalU81(isNePal)
isPaltt
isQidtt

Q is empty.