mobca ombca mboca bmoca obmca bomca mocba omcba mcoba cmoba ocmba comba mbcoa bmcoa mcboa cmboa bcmoa cbmoa obcma bocma ocbma cobma bcoma cboma mobac ombac mboac bmoac obmac bomac moabc omabc maobc amobc oambc aombc mbaoc bmaoc maboc amboc bamoc abmoc obamc boamc oabmc aobmc baomc abomc mocab omcab mcoab cmoab ocmab comab moacb omacb maocb amocb oamcb aomcb mcaob cmaob macob amcob camob acmob ocamb coamb oacmb aocmb caomb acomb mbcao bmcao mcbao cmbao bcmao cbmao mbaco bmaco mabco ambco bamco abmco mcabo cmabo macbo amcbo cambo acmbo bcamo cbamo bacmo abcmo cabmo acbmo obcam bocam ocbam cobam bcoam cboam obacm boacm oabcm aobcm baocm abocm ocabm coabm oacbm aocbm caobm acobm bcaom cbaom bacom abcom cabom acbom
Note: these 'words' (valid or invalid) are all the permutations of the word mobca. These words are obtained by scrambling the letters in mobca.