C1111233131211111211113313331333133313331322322331323132322331211   >>    C111123313121111121111331333133313331333132232233132313232233121   <<    C1111233131211111211113313331333133313331322322331323132322331213   >>      C1111233131211111211113313331333133313331322322331323132322331212   >>