Input TRS:
    1: topB(i,N1(),y) -> topA(1(),T1(),y)
    2: topA(i,x,N2()) -> topB(0(),x,T2())
    3: topB(i,S1(),y) -> topA(i,N1(),y)
    4: topA(i,x,S2()) -> topB(i,x,N2())
    5: topA(i,N1(),T2()) -> topB(i,N1(),S2())
    6: topA(1(),T1(),T2()) -> topB(1(),T1(),S2())
   e1: topA(i,N1(),y) ->= topA(1(),T1(),y)	[relative]
   e2: topB(i,x,N2()) ->= topB(0(),x,T2())	[relative]
   e3: topA(i,S1(),y) ->= topA(i,N1(),y)	[relative]
   e4: topB(i,x,S2()) ->= topB(i,x,N2())	[relative]
   e5: topB(i,N1(),T2()) ->= topB(i,N1(),S2())	[relative]
   e6: topB(1(),T1(),T2()) ->= topB(1(),T1(),S2())	[relative]
Weak rule e6 calls a strict rule