C312312111111331312111133133313231333131133132231333133313331313213232321   >>    C31231211111133131211113313331323133313113313223133313331333131321323232   <<    C312312111111331312111133133313231333131133132231333133313331313213232323   >>      C312312111111331312111133133313231333131133132231333133313331313213232322   >>