C312312111111331312111133132313331333133313232132313232213231323321   >>    C31231211111133131211113313231333133313331323213231323221323132332   <<    C312312111111331312111133132313331333133313232132313232213231323323   >>      C312312111111331312111133132313331333133313232132313232213231323322   >>