+ , ("last" , (1, genExprFCall lastId ) )
+ , ("tail" , (1, genExprFCall tailId ) )
+ , ("init" , (1, genExprFCall initId ) )
+ , ("take" , (2, genExprFCall takeId ) )
+ , ("drop" , (2, genExprFCall dropId ) )
+ , ("+>" , (2, genExprFCall plusgtId ) )