cheek hceek cehek echek hecek ehcek cheek hceek cehek echek hecek ehcek ceehk ecehk ceehk ecehk eechk eechk heeck eheck heeck eheck eehck eehck cheke hceke cehke echke hecke ehcke chkee hckee ckhee kchee hkcee khcee cekhe eckhe ckehe kcehe ekche keche hekce ehkce hkece khece ekhce kehce cheke hceke cehke echke hecke ehcke chkee hckee ckhee kchee hkcee khcee cekhe eckhe ckehe kcehe ekche keche hekce ehkce hkece khece ekhce kehce ceekh ecekh ceekh ecekh eeckh eeckh cekeh eckeh ckeeh kceeh ekceh keceh cekeh eckeh ckeeh kceeh ekceh keceh eekch eekch ekech keech ekech keech heekc ehekc heekc ehekc eehkc eehkc hekec ehkec hkeec kheec ekhec kehec hekec ehkec hkeec kheec ekhec kehec eekhc eekhc ekehc keehc ekehc keehc
Note: these 'words' (valid or invalid) are all the permutations of the word cheek. These words are obtained by scrambling the letters in cheek.