C312312111111331312111133133313231333131133132231333133313133313231322123313221   >>    C31231211111133131211113313331323133313113313223133313331313331323132212331322   <<    C312312111111331312111133133313231333131133132231333133313133313231322123313223   >>      C312312111111331312111133133313231333131133132231333133313133313231322123313222   >>