bleak lbeak belak eblak lebak elbak blaek lbaek balek ablek labek albek bealk ebalk baelk abelk eablk aeblk leabk elabk laebk alebk ealbk aelbk bleka lbeka belka eblka lebka elbka blkea lbkea bklea kblea lkbea klbea bekla ebkla bkela kbela ekbla kebla lekba elkba lkeba kleba eklba kelba blake lbake balke ablke labke albke blkae lbkae bklae kblae lkbae klbae bakle abkle bkale kbale akble kable lakbe alkbe lkabe klabe aklbe kalbe beakl ebakl baekl abekl eabkl aebkl bekal ebkal bkeal kbeal ekbal kebal bakel abkel bkael kbael akbel kabel eakbl aekbl ekabl keabl akebl kaebl leakb elakb laekb alekb ealkb aelkb lekab elkab lkeab kleab eklab kelab lakeb alkeb lkaeb klaeb akleb kaleb eaklb aeklb ekalb kealb akelb kaelb
Note: these 'words' (valid or invalid) are all the permutations of the word bleak. These words are obtained by scrambling the letters in bleak.