beefs ebefs beefs ebefs eebfs eebfs befes ebfes bfees fbees efbes febes befes ebfes bfees fbees efbes febes eefbs eefbs efebs feebs efebs feebs beesf ebesf beesf ebesf eebsf eebsf besef ebsef bseef sbeef esbef sebef besef ebsef bseef sbeef esbef sebef eesbf eesbf esebf seebf esebf seebf befse ebfse bfese fbese efbse febse besfe ebsfe bsefe sbefe esbfe sebfe bfsee fbsee bsfee sbfee fsbee sfbee efsbe fesbe esfbe sefbe fsebe sfebe befse ebfse bfese fbese efbse febse besfe ebsfe bsefe sbefe esbfe sebfe bfsee fbsee bsfee sbfee fsbee sfbee efsbe fesbe esfbe sefbe fsebe sfebe eefsb eefsb efesb feesb efesb feesb eesfb eesfb esefb seefb esefb seefb efseb feseb esfeb sefeb fseeb sfeeb efseb feseb esfeb sefeb fseeb sfeeb
Note: these 'words' (valid or invalid) are all the permutations of the word beefs. These words are obtained by scrambling the letters in beefs.