C1111233131211111211113313331323133313231323223313232233132232321   >>    C111123313121111121111331333132313331323132322331323223313223232   <<    C1111233131211111211113313331323133313231323223313232233132232323   >>      C1111233131211111211113313331323133313231323223313232233132232322   >>