C11111333133313232233133313331333133313231312111133131133132322312213231321   >>    C1111133313331323223313331333133313331323131211113313113313232231221323132   <<    C11111333133313232233133313331333133313231312111133131133132322312213231323   >>      C11111333133313232233133313331333133313231312111133131133132322312213231322   >>