C1111233131211111211113313331333133313331322331333132233313123231   >>    C111123313121111121111331333133313331333132233133313223331312323   <<    C1111233131211111211113313331333133313331322331333132233313123233   >>      C1111233131211111211113313331333133313331322331333132233313123232   >>