C1111233131211111211113313331333133313232321333133313331313311113213331   >>    C111123313121111121111331333133313331323232133313331333131331111321333   <<    C1111233131211111211113313331333133313232321333133313331313311113213333   >>      C1111233131211111211113313331333133313232321333133313331313311113213332   >>