use '?' for JOKER (blank)

From letters D, E, M, U, R, R, I, N, G  I made following words

9 letter words

demurring[13], murdering[13]

7 letter words

unrimed[10], grinder[9], regrind[9], dungier[9], murrine[9]

6 letter words

grimed[10], minder[9], remind[9], regnum[9], muring[9], murder[9], dinger[8], engird[8], girned[8], reding[8], ringed[8], girder[8], guider[8], gerund[8], nudger[8], during[8], ungird[8], murein[8], murine[8], erring[7], ringer[7], inured[7], ruined[7], durrie[7], ruiner[6]

5 letter words

midge[9], degum[9], denim[8], mined[8], dimer[8], mired[8], rimed[8], grime[8], demur[8], mured[8], grume[8], murid[8], deign[7], dinge[7], dirge[7], gride[7], ridge[7], grind[7], miner[7], rimer[7], guide[7], nudge[7], urged[7], rumen[7], murre[7], diner[6], reign[6], renig[6], direr[6], drier[6], rider[6], rerig[6], indue[6], nudie[6], nuder[6], under[6], ruing[6], unrig[6], ruder[6], urger[6], inure[5], urine[5], rerun[5]

4 letter words

dime[7], idem[7], mend[7], mind[7], derm[7], germ[7], grim[7], geum[7], drum[7], grum[7], gied[6], ding[6], mien[6], mine[6], dreg[6], gird[6], grid[6], emir[6], mire[6], rime[6], gude[6], guid[6], dung[6], menu[6], neum[6], muni[6], drug[6], mure[6], murr[6], deni[5], dine[5], nide[5], gien[5], dire[5], ired[5], ride[5], nerd[5], rend[5], rind[5], girn[5], grin[5], ring[5], dune[5], nude[5], unde[5], genu[5], dure[5], rude[5], rued[5], grue[5], urge[5], durn[5], nurd[5], rung[5], durr[5], rein[4], rune[4], ruin[4], ruer[4]

3 letter words

med[6], gem[6], meg[6], dim[6], mid[6], mig[6], mud[6], gum[6], mug[6], ged[5], dig[5], gid[5], men[5], nim[5], rem[5], mir[5], rim[5], dug[5], emu[5], mun[5], rum[5], die[4], gie[4], den[4], end[4], eng[4], gen[4], neg[4], din[4], gin[4], red[4], erg[4], reg[4], rid[4], rig[4], due[4], dui[4], dun[4], gnu[4], gun[4], urd[4], rug[4], ire[3], rei[3], ern[3], rin[3], err[3], rue[3], run[3], urn[3]

2 letter words

em[4], me[4], mi[4], mu[4], um[4], de[3], ed[3], id[3], en[2], ne[2], in[2], er[2], re[2], nu[2], un[2]