C312312111111331312111133133313231333131133132231333133313331322332323321   >>    C31231211111133131211113313331323133313113313223133313331333132233232332   <<    C312312111111331312111133133313231333131133132231333133313331322332323323   >>      C312312111111331312111133133313231333131133132231333133313331322332323322   >>