C111123313121111121111331333133313331331121111133313331333133313331323132211321   >>    C11112331312111112111133133313331333133112111113331333133313331333132313221132   <<    C111123313121111121111331333133313331331121111133313331333133313331323132211323   >>      C111123313121111121111331333133313331331121111133313331333133313331323132211322   >>