C11111333133313232233133313331333133313331313113313232313233323321   >>    C1111133313331323223313331333133313331333131311331323231323332332   <<    C11111333133313232233133313331333133313331313113313232313233323323   >>      C11111333133313232233133313331333133313331313113313232313233323322   >>