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From letters Y, E, L, L, O, W, W, A, R, E  I made following words

10 letter words

yellowware[19]

8 letter words

wallower[14], yellower[14]

7 letter words

walleye[13], rollway[13], loyaler[10]

6 letter words

wallow[12], leeway[12], yellow[12], lawyer[12], lowery[12], yowler[12], rallye[9], really[9], yeller[9], orally[9], areole[6], loreal[6]

5 letter words

wally[11], welly[11], lowly[11], weary[11], rawly[11], allow[8], waler[8], lower[8], rowel[8], alley[8], alloy[8], loyal[8], early[8], layer[8], leary[8], relay[8], leery[8], rally[8], royal[8], allee[5], laree[5], loral[5]

4 letter words

wawl[10], waly[10], yawl[10], wyle[10], yowe[10], yowl[10], awry[10], wary[10], awee[7], wale[7], weal[7], weel[7], wall[7], well[7], alow[7], awol[7], lowe[7], ware[7], wear[7], ewer[7], weer[7], were[7], wore[7], eely[7], ally[7], yell[7], aery[7], eyra[7], yare[7], year[7], eery[7], eyer[7], eyre[7], aryl[7], lyre[7], rely[7], oyer[7], yore[7], lory[7], alee[4], leal[4], aloe[4], olea[4], olla[4], earl[4], lear[4], rale[4], real[4], leer[4], reel[4], aero[4], oral[4], lore[4], orle[4], role[4], roll[4]

3 letter words

waw[9], wow[9], way[9], yaw[9], wye[9], yew[9], yow[9], wry[9], awe[6], wae[6], ewe[6], wee[6], awl[6], law[6], owe[6], woe[6], low[6], owl[6], raw[6], war[6], row[6], aye[6], yea[6], eye[6], lay[6], ley[6], lye[6], ray[6], rya[6], yar[6], rye[6], ale[3], lea[3], eel[3], lee[3], all[3], ell[3], ole[3], are[3], ear[3], era[3], ere[3], ree[3], lar[3], oar[3], ora[3], ore[3], roe[3]

2 letter words

aw[5], we[5], ow[5], wo[5], ay[5], ya[5], ye[5], oy[5], yo[5], ae[2], al[2], la[2], el[2], oe[2], lo[2], ar[2], er[2], re[2], or[2]