C11111333133313232233133313331333132313331323321313331333132112313233321   >>    C1111133313331323223313331333133313231333132332131333133313211231323332   <<    C11111333133313232233133313331333132313331323321313331333132112313233323   >>      C11111333133313232233133313331333132313331323321313331333132112313233322   >>