C1111133313331323223313331333133313331323131211113313221333223311   >>    C111113331333132322331333133313331333132313121111331322133322331   <<    C1111133313331323223313331333133313331323131211113313221333223313   >>      C1111133313331323223313331333133313331323131211113313221333223312   >>