C11111333133313232233133313331333133313233213331323133313331312331   >>    C1111133313331323223313331333133313331323321333132313331333131233   <<    C11111333133313232233133313331333133313233213331323133313331312333   >>      C11111333133313232233133313331333133313233213331323133313331312332   >>