C31232233133313221211113313331333133313332321333131133132313331313233212321   >>    C3123223313331322121111331333133313331333232133313113313231333131323321232   <<    C31232233133313221211113313331333133313332321333131133132313331313233212323   >>      C31232233133313221211113313331333133313332321333131133132313331313233212322   >>