use '?' for JOKER (blank)

From letters X, Y, L, O, P, H, O, N, I, S, T, S  I made following words

12 letter words

xylophonists[27]

11 letter words

xylophonist[26]

10 letter words

photolysis[18]

9 letter words

toxophily[24]

8 letter words

oxyphils[23], hypnosis[16], typhoons[16], toyshops[16], thionyls[14], tonishly[14], snoopily[13], spoonily[13], snootily[11], tylosins[11], plosions[10], poloists[10], topsoils[10], solitons[8]

7 letter words

oxyphil[22], sixthly[20], phonily[15], syphons[15], typhoon[15], phytins[15], phytols[15], phytons[15], pythons[15], typhons[15], toyshop[15], thionyl[13], soothly[13], stylish[13], siphons[12], sonship[12], plinths[12], lithops[12], photons[12], spilths[12], sophist[12], isotopy[12], ooliths[10], holists[10], stonish[10], stonily[10], tylosin[10], sootily[10], plosion[9], poisons[9], pontils[9], poloist[9], topsoil[9], options[9], potions[9], splints[9], pistols[9], pistons[9], postins[9], spintos[9], solions[7], lotions[7], soliton[7], tonsils[7], soloist[7], stolons[7]

6 letter words

sphynx[21], sphinx[18], sixths[16], xystoi[16], xystos[16], oxlips[15], phylon[14], poshly[14], syphon[14], physis[14], sylphs[14], hyssop[14], phytin[14], phytol[14], phyton[14], python[14], typhon[14], toxins[13], sloshy[12], hysons[12], thinly[12], toyish[12], hostly[12], synths[12], polish[11], siphon[11], phonos[11], splosh[11], plinth[11], photon[11], spilth[11], photos[11], pothos[11], pylons[11], snoopy[11], spoony[11], pyosis[11], polity[11], pointy[11], shools[9], oolith[9], tholoi[9], holist[9], lithos[9], thiols[9], tonish[9], tholos[9], hoists[9], sloths[9], shoots[9], sooths[9], nosily[9], lysins[9], snooty[9], toyons[9], polios[8], poison[8], spoils[8], opsins[8], sloops[8], spools[8], snoops[8], spoons[8], pontil[8], option[8], potion[8], splint[8], pilots[8], pistol[8], spoilt[8], pinots[8], pintos[8], piston[8], pitons[8], points[8], postin[8], spinto[8], splits[8], posits[8], ptosis[8], stoops[8], solion[6], snools[6], solons[6], lotion[6], tonsil[6], stolon[6], sotols[6], stools[6], snoots[6]

5 letter words

phono[10], phons[10], hoops[10], poohs[10], ships[10], shops[10], sophs[10], shool[8], shoon[8], shins[8], sinhs[8], slosh[8], shoos[8], litho[8], thiol[8], polio[7], polis[7], spoil[7], opsin[7], pions[7], loops[7], polos[7], pools[7], sloop[7], spool[7], poons[7], snoop[7], spoon[7], lisps[7], slips[7], snips[7], spins[7], pisos[7], slops[7], linos[5], lions[5], loins[5], noils[5], olios[5], loons[5], nolos[5], snool[5], solon[5], silos[5], soils[5], solos[5]