C1111233131211111211113313331333133313232321333133313331333131132123231   >>    C111123313121111121111331333133313331323232133313331333133313113212323   <<    C1111233131211111211113313331333133313232321333133313331333131132123233   >>      C1111233131211111211113313331333133313232321333133313331333131132123232   >>