Refl(A List;x,y.x Rl y) Sym(A List;x,y.x Rl y) Trans(A List;x,y.x Rl y)
1. Refl(A List;x,y.x Rl y)2. Sym(A List;x,y.x Rl y)3. Trans(A List;x,y.x Rl y)
2. Sym(A List;x,y.x Rl y)
3. Trans(A List;x,y.x Rl y)