C1111233131211111211113313331333133313332213113121111331333132322323321   >>    C111123313121111121111331333133313331333221311312111133133313232232332   <<    C1111233131211111211113313331333133313332213113121111331333132322323323   >>      C1111233131211111211113313331333133313332213113121111331333132322323322   >>