generic conses a :: [a]
derive conses CONS,UNIT,PAIR,EITHER,OBJECT,FIELD,RECORD,Int,Bool,Char,Real,String,(),{},{!},[],[! ],[ !],[!!],(->)
generic conses a :: [a]
derive conses CONS,UNIT,PAIR,EITHER,OBJECT,FIELD,RECORD,Int,Bool,Char,Real,String,(),{},{!},[],[! ],[ !],[!!],(->)