umoch muoch uomch oumch mouch omuch umcoh mucoh ucmoh cumoh mcuoh cmuoh uocmh oucmh ucomh cuomh ocumh coumh mocuh omcuh mcouh cmouh ocmuh comuh umohc muohc uomhc oumhc mouhc omuhc umhoc muhoc uhmoc humoc mhuoc hmuoc uohmc ouhmc uhomc huomc ohumc houmc mohuc omhuc mhouc hmouc ohmuc homuc umcho mucho ucmho cumho mcuho cmuho umhco muhco uhmco humco mhuco hmuco uchmo cuhmo uhcmo hucmo chumo hcumo mchuo cmhuo mhcuo hmcuo chmuo hcmuo uochm ouchm ucohm cuohm ocuhm couhm uohcm ouhcm uhocm huocm ohucm houcm uchom cuhom uhcom hucom chuom hcuom ochum cohum ohcum hocum choum hcoum mochu omchu mcohu cmohu ocmhu comhu mohcu omhcu mhocu hmocu ohmcu homcu mchou cmhou mhcou hmcou chmou hcmou ochmu cohmu ohcmu hocmu chomu hcomu
Note: these 'words' (valid or invalid) are all the permutations of the word umoch. These words are obtained by scrambling the letters in umoch.