C11111333133313232233133313331333133112323131121211113313221221   >>    C1111133313331323223313331333133313311232313112121111331322122   <<    C11111333133313232233133313331333133112323131121211113313221223   >>      C11111333133313232233133313331333133112323131121211113313221222   >>