use '?' for JOKER (blank)

From letters S, C, H, E, M, A, T, A  I made following words

8 letter words

schemata[15]

7 letter words

matches[14], hamates[12]

6 letter words

maches[13], sachem[13], samech[13], schema[13], chaeta[11], hamate[11], chaste[11], cheats[11], sachet[11], scathe[11], taches[11], asthma[11], matsah[11]

5 letter words

mache[12], chams[12], chasm[12], machs[12], match[12], aches[10], chase[10], amahs[10], haems[10], hames[10], shame[10], cheat[10], tache[10], teach[10], theca[10], chats[10], tachs[10], chest[10], techs[10], maths[10], meths[10], camas[9], acmes[9], cames[9], maces[9], haets[8], haste[8], hates[8], heats[8], aceta[7], caste[7], cates[7], cesta[7], taces[7], atmas[7], mates[7], meats[7], satem[7], steam[7], tames[7], teams[7]

4 letter words

cham[11], mach[11], ache[9], each[9], amah[9], ahem[9], haem[9], hame[9], cash[9], hams[9], mash[9], sham[9], hems[9], mesh[9], chat[9], tach[9], echt[9], etch[9], tech[9], math[9], meth[9], them[9], acme[8], came[8], mace[8], cams[8], macs[8], scam[8], aahs[7], haes[7], shea[7], eath[7], haet[7], hate[7], heat[7], thae[7], hast[7], hats[7], shat[7], eths[7], hest[7], hets[7], casa[6], aces[6], case[6], amas[6], masa[6], maes[6], mesa[6], same[6], seam[6], acta[6], cate[6], tace[6], atma[6], mate[6], meat[6], meta[6], tame[6], team[6], acts[6], cast[6], cats[6], scat[6], sect[6], mast[6], mats[6], tams[6], stem[6], asea[4], ates[4], east[4], eats[4], etas[4], sate[4], seat[4], seta[4], teas[4]

3 letter words

ham[8], hem[8], cam[7], mac[7], aah[6], aha[6], hae[6], ahs[6], ash[6], has[6], sha[6], hes[6], she[6], hat[6], eth[6], het[6], the[6], ace[5], ama[5], mae[5], sac[5], sec[5], mas[5], ems[5], act[5], cat[5], mat[5], tam[5], met[5], aas[3], sae[3], sea[3], ate[3], eat[3], eta[3], tae[3], tea[3], sat[3], tas[3], set[3]

2 letter words

hm[7], ah[5], ha[5], eh[5], he[5], sh[5], am[4], ma[4], em[4], me[4], aa[2], ae[2], as[2], es[2], at[2], ta[2], et[2]