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