burka ubrka bruka rbuka urbka rubka bukra ubkra bkura kbura ukbra kubra brkua rbkua bkrua kbrua rkbua krbua urkba rukba ukrba kurba rkuba kruba burak ubrak bruak rbuak urbak rubak buark ubark baurk aburk uabrk aubrk brauk rbauk baruk abruk rabuk arbuk urabk ruabk uarbk aurbk raubk arubk bukar ubkar bkuar kbuar ukbar kubar buakr ubakr baukr abukr uabkr aubkr bkaur kbaur bakur abkur kabur akbur ukabr kuabr uakbr aukbr kaubr akubr brkau rbkau bkrau kbrau rkbau krbau braku rbaku barku abrku rabku arbku bkaru kbaru bakru abkru kabru akbru rkabu krabu rakbu arkbu karbu akrbu urkab rukab ukrab kurab rkuab kruab urakb ruakb uarkb aurkb raukb arukb ukarb kuarb uakrb aukrb kaurb akurb rkaub kraub rakub arkub karub akrub
Note: these 'words' (valid or invalid) are all the permutations of the word burka. These words are obtained by scrambling the letters in burka.