dmahl mdahl damhl admhl madhl amdhl dmhal mdhal dhmal hdmal mhdal hmdal dahml adhml dhaml hdaml ahdml hadml mahdl amhdl mhadl hmadl ahmdl hamdl dmalh mdalh damlh admlh madlh amdlh dmlah mdlah dlmah ldmah mldah lmdah dalmh adlmh dlamh ldamh aldmh ladmh maldh amldh mladh lmadh almdh lamdh dmhla mdhla dhmla hdmla mhdla hmdla dmlha mdlha dlmha ldmha mldha lmdha dhlma hdlma dlhma ldhma hldma lhdma mhlda hmlda mlhda lmhda hlmda lhmda dahlm adhlm dhalm hdalm ahdlm hadlm dalhm adlhm dlahm ldahm aldhm ladhm dhlam hdlam dlham ldham hldam lhdam ahldm haldm alhdm lahdm hladm lhadm mahld amhld mhald hmald ahmld hamld malhd amlhd mlahd lmahd almhd lamhd mhlad hmlad mlhad lmhad hlmad lhmad ahlmd halmd alhmd lahmd hlamd lhamd
Note: these 'words' (valid or invalid) are all the permutations of the word dmahl. These words are obtained by scrambling the letters in dmahl.