C31231211111133131211113313331333133313332233132313331333132313331322132311211   >>    C3123121111113313121111331333133313331333223313231333133313231333132213231121   <<    C31231211111133131211113313331333133313332233132313331333132313331322132311213   >>      C31231211111133131211113313331333133313332233132313331333132313331322132311212   >>