C31231211111133131211113313331323133313331312121111331323221333133313221221   >>    C3123121111113313121111331333132313331333131212111133132322133313331322122   <<    C31231211111133131211113313331323133313331312121111331323221333133313221223   >>      C31231211111133131211113313331323133313331312121111331323221333133313221222   >>