ShowShow2TImp
class ShowShow2TImp[A1, A2, R <: Show2[A1, A2]](val typeStr: String)(implicit val ev1: ShowT[A1], val ev2: ShowT[A2]) extends ShowShow2T[A1, A2, R]
trait ShowShowT[R]
trait ShowNT[R]
trait ShowCompoundT[R]
trait ShowT[R]
trait TypeStr
class Object
trait Matchable
class Any