C1111133313331323223313331333133313331333131333133313232233131121   >>    C111113331333132322331333133313331333133313133313331323223313112   <<    C1111133313331323223313331333133313331333131333133313232233131123   >>      C1111133313331323223313331333133313331333131333133313232233131122   >>