C1111233131211111211113313331333133313331333133313331311331323221232211   >>    C111123313121111121111331333133313331333133313331333131133132322123221   <<    C1111233131211111211113313331333133313331333133313331311331323221232213   >>      C1111233131211111211113313331333133313331333133313331311331323221232212   >>