C11111333133313232233133313331333133313331331123231311211331321   >>    C1111133313331323223313331333133313331333133112323131121133132   <<    C11111333133313232233133313331333133313331331123231311211331323   >>      C11111333133313232233133313331333133313331331123231311211331322   >>