C312312111111331312111133133313331333133322331333133313311221333132321   >>    C31231211111133131211113313331333133313332233133313331331122133313232   <<    C312312111111331312111133133313331333133322331333133313311221333132323   >>      C312312111111331312111133133313331333133322331333133313311221333132322   >>