C1111233131211111211113313331333133313331322331333133313112112111   >>    C111123313121111121111331333133313331333132233133313331311211211   <<    C1111233131211111211113313331333133313331322331333133313112112113   >>      C1111233131211111211113313331333133313331322331333133313112112112   >>