C312312111111331312111133132313331333133313331333131333133313331323132231221   >>    C31231211111133131211113313231333133313331333133313133313331333132313223122   <<    C312312111111331312111133132313331333133313331333131333133313331323132231223   >>      C312312111111331312111133132313331333133313331333131333133313331323132231222   >>