C31232233133313221211113313331333133313331212111111331313331323233213231   >>    C3123223313331322121111331333133313331333121211111133131333132323321323   <<    C31232233133313221211113313331333133313331212111111331313331323233213233   >>      C31232233133313221211113313331333133313331212111111331313331323233213232   >>