C1111233131211111211113313331333133313331333133313331333133313331322222212321   >>    C111123313121111121111331333133313331333133313331333133313331333132222221232   <<    C1111233131211111211113313331333133313331333133313331333133313331322222212323   >>      C1111233131211111211113313331333133313331333133313331333133313331322222212322   >>