niqab inqab nqiab qniab iqnab qinab niaqb inaqb naiqb aniqb ianqb ainqb nqaib qnaib naqib anqib qanib aqnib iqanb qianb iaqnb aiqnb qainb aqinb niqba inqba nqiba qniba iqnba qinba nibqa inbqa nbiqa bniqa ibnqa binqa nqbia qnbia nbqia bnqia qbnia bqnia iqbna qibna ibqna biqna qbina bqina niabq inabq naibq anibq ianbq ainbq nibaq inbaq nbiaq bniaq ibnaq binaq nabiq anbiq nbaiq bnaiq abniq baniq iabnq aibnq ibanq bianq abinq bainq nqabi qnabi naqbi anqbi qanbi aqnbi nqbai qnbai nbqai bnqai qbnai bqnai nabqi anbqi nbaqi bnaqi abnqi banqi qabni aqbni qbani bqani abqni baqni iqabn qiabn iaqbn aiqbn qaibn aqibn iqban qiban ibqan biqan qbian bqian iabqn aibqn ibaqn biaqn abiqn baiqn qabin aqbin qbain bqain abqin baqin
Note: these 'words' (valid or invalid) are all the permutations of the word niqab. These words are obtained by scrambling the letters in niqab.