C1111233131211111211113313331333133313331333133313331333132221231   >>    C111123313121111121111331333133313331333133313331333133313222123   <<    C1111233131211111211113313331333133313331333133313331333132221233   >>      C1111233131211111211113313331333133313331333133313331333132221232   >>