C313212111133131211331333133313331333133312111133132233132312311   >>    C31321211113313121133133313331333133313331211113313223313231231   <<    C313212111133131211331333133313331333133312111133132233132312313   >>      C313212111133131211331333133313331333133312111133132233132312312   >>