use '?' for JOKER (blank)

From letters P, H, O, T, O, I, O, N, I, Z, A, T, I, O, N  I made following words

15 letter words

photoionization[28]

10 letter words

ionization[18]

9 letter words

ozonation[17], phonation[14]

8 letter words

zonation[16], antiphon[13], tithonia[11], potation[10], notation[8]

7 letter words

thiazin[18], hoatzin[18], thionin[10], opinion[9], pintano[9], pontoon[9], antipot[9]

6 letter words

zinnia[14], phonon[11], hoopoo[11], hatpin[11], photon[11], tahini[9], panini[8], panino[8], pinion[8], option[8], potion[8], ponton[8], tinpot[8], potato[8], anoint[6], nation[6], notion[6], titian[6]

5 letter words

azoth[16], topaz[15], phono[10], tophi[10], photo[10], honan[8], haint[8], ninth[8], tooth[8], pinna[7], piano[7], pinon[7], inapt[7], paint[7], patin[7], pinta[7], patio[7], panto[7], pinot[7], pinto[7], piton[7], point[7], topoi[7], pitta[7], potto[7], anion[5], inion[5], onion[5], niton[5], taint[5], titan[5], tanto[5]

4 letter words

phiz[17], nazi[12], azon[12], zona[12], zoon[12], ziti[12], opah[9], phon[9], hoop[9], pooh[9], path[9], phat[9], pith[9], phot[9], toph[9], ohia[7], hant[7], than[7], hint[7], thin[7], oath[7], thio[7], hoot[7], that[7], nipa[6], pain[6], pian[6], pina[6], pion[6], poon[6], pita[6], tipi[6], pant[6], pint[6], atop[6], topi[6], topo[6], inia[4], naoi[4], anon[4], nona[4], noon[4], anti[4], tain[4], inti[4], iota[4], nota[4], into[4], onto[4], toon[4], titi[4], tint[4], toit[4], otto[4], toot[4]

3 letter words

zap[13], zip[13], zin[11], azo[11], zoa[11], zoo[11], zit[11], hap[8], pah[8], hip[8], phi[8], hop[8], poh[8], pht[8], ahi[6], nah[6], hin[6], hao[6], hon[6], noh[6], oho[6], ooh[6], hat[6], hit[6], nth[6], hot[6], tho[6], pia[5], nap[5], pan[5], nip[5], pin[5], apo[5], poi[5], poo[5], apt[5], pat[5], tap[5], pit[5], tip[5], opt[5], pot[5], top[5], ain[3], ani[3], nan[3], inn[3], ion[3], noo[3], ono[3], ait[3], ant[3], tan[3], nit[3], tin[3], oat[3], tao[3], not[3], ton[3], oot[3], too[3], att[3], tat[3], tit[3], tot[3]

2 letter words

ah[5], ha[5], hi[5], ho[5], oh[5], pa[4], pi[4], ai[2], an[2], na[2], in[2], oi[2], no[2], on[2]