C1111233131211111211113313331333133313331333133313331323133313331322221311   >>    C111123313121111121111331333133313331333133313331333132313331333132222131   <<    C1111233131211111211113313331333133313331333133313331323133313331322221313   >>      C1111233131211111211113313331333133313331333133313331323133313331322221312   >>