C1111233131211111211113313331333133313232321333133313331313211331121   >>    C111123313121111121111331333133313331323232133313331333131321133112   <<    C1111233131211111211113313331333133313232321333133313331313211331123   >>      C1111233131211111211113313331333133313232321333133313331313211331122   >>