C1111233131211111211113313331333133313231323331323132332322123231   >>    C111123313121111121111331333133313331323132333132313233232212323   <<    C1111233131211111211113313331333133313231323331323132332322123233   >>      C1111233131211111211113313331333133313231323331323132332322123232   >>