C1111133313331323223313331333133313233231311211331333131122213121   >>    C111113331333132322331333133313331323323131121133133313112221312   <<    C1111133313331323223313331333133313233231311211331333131122213123   >>      C1111133313331323223313331333133313233231311211331333131122213122   >>