C11111333133313232233133313331333133313233213331323133313221211111121221   >>    C1111133313331323223313331333133313331323321333132313331322121111112122   <<    C11111333133313232233133313331333133313233213331323133313221211111121223   >>      C11111333133313232233133313331333133313233213331323133313221211111121222   >>