use '?' for JOKER (blank)

From letters A, C, T, U, A, T, I, O, N, S  I made following words

10 letter words

actuations[12]

9 letter words

causation[11], actuation[11]

8 letter words

oscitant[10], tactions[10], auctions[10], cautions[10], titanous[8]

7 letter words

satanic[9], sacaton[9], actions[9], atonics[9], cations[9], taction[9], astatic[9], octants[9], acinous[9], auction[9], caution[9], conatus[9], toucans[9], suction[9], catsuit[9], outacts[9], outcast[9], atonias[7], attains[7], anattos[7], station[7]

6 letter words

casino[8], action[8], atonic[8], cation[8], casita[8], sancta[8], actins[8], antics[8], nastic[8], coatis[8], scotia[8], cantos[8], cotans[8], octans[8], tocsin[8], tonics[8], intact[8], octant[8], attics[8], static[8], tincts[8], cottas[8], acinus[8], cousin[8], tunica[8], toucan[8], cantus[8], uncast[8], cutins[8], tunics[8], coitus[8], counts[8], outact[8], atonia[6], sonata[6], attain[6], anatto[6], statin[6], taints[6], tanist[6], titans[6], tatsoi[6], stotin[6], tauons[6], outsin[6], autist[6], taunts[6], outsat[6], outsit[6]

5 letter words

cains[7], canso[7], cions[7], coins[7], icons[7], scion[7], sonic[7], actin[7], antic[7], coati[7], canto[7], cotan[7], octan[7], ontic[7], tonic[7], canst[7], cants[7], scant[7], ascot[7], coast[7], coats[7], costa[7], tacos[7], stoic[7], attic[7], tacit[7], tinct[7], cotta[7], scatt[7], tacts[7], uncia[7], incus[7], conus[7], uncos[7], cutin[7], tunic[7], count[7], scuta[7], cutis[7], ictus[7], cunts[7], scout[7], anoas[5], antas[5], antis[5], saint[5], satin[5], stain[5], tains[5], iotas[5], ostia[5], stoai[5], santo[5], taint[5], titan[5], tanto[5], stint[5], tints[5], stoat[5], toast[5], toits[5], sauna[5], unais[5], tauon[5], aunts[5], tunas[5], suint[5], units[5], autos[5], snout[5], tonus[5], taunt[5], sutta[5], tauts[5], stunt[5], stout[5], touts[5]

4 letter words

cain[6], ciao[6], cion[6], coin[6], coni[6], icon[6], casa[6], asci[6], cans[6], scan[6], ocas[6], soca[6], cons[6], acta[6], cant[6], coat[6], taco[6], otic[6], acts[6], cast[6], cats[6], scat[6], cist[6], tics[6], anoa[4], naoi[4], anas[4], ansa[4], ains[4], anis[4], sain[4], naos[4], ions[4], anta[4], anti[4], tain[4], iota[4], nota[4], into[4], aits[4], sati[4], ants[4], tans[4], nits[4], snit[4]