C312312111111331312111133132313331333133313331313331333133313331333132322312321   >>    C31231211111133131211113313231333133313331333131333133313331333133313232231232   <<    C312312111111331312111133132313331333133313331313331333133313331333132322312323   >>      C312312111111331312111133132313331333133313331313331333133313331333132322312322   >>