use '?' for JOKER (blank)

From letters P, S, Y, C, H, O, S, Y, N, T, H, E, S, E, S  I made following words

15 letter words

psychosyntheses[31]

11 letter words

pythonesses[19]

10 letter words

hypotheses[21], poshnesses[15]

9 letter words

hypothecs[22], psychoses[19], ethephons[17], neophytes[17], pythoness[17], sheepcots[16], postsyncs[16], shynesses[15], syntheses[15], coynesses[14], hotnesses[12], hostesses[12]

8 letter words

hypothec[21], ethephon[16], hypnoses[16], neophyte[16], penoches[15], sheepcot[15], pschents[15], pycnoses[15], syncopes[15], ecotypes[15], postsync[15], eyeshots[14], poshness[13], potheens[13], stenches[13], heptoses[13], synopses[13], neotypes[13], eyespots[13], potences[12], ethnoses[11], pentoses[10], posteens[10], stepsons[10], stenoses[8]

7 letter words

hyphens[18], psyches[17], psychos[17], hotches[15], phoneys[15], syphons[15], hyssops[15], stenchy[15], typhose[15], phytons[15], pythons[15], typhons[15], scythes[15], penoche[14], pschent[14], syncope[14], ecotype[14], potency[14], ectypes[14], cotypes[14], shyness[13], ethynes[13], eyeshot[13], honesty[13], sphenes[12], chesses[12], potheen[12], tenches[12], notches[12], technos[12], heptose[12], poshest[12], coyness[12], sycoses[12], neotype[12], eyespot[12], peyotes[12], encysts[12], spences[11], potence[11], pectens[11], ethoses[10], hotness[10], hostess[10], oyesses[10], spenses[9], possess[9], cenotes[9], openest[9], pentose[9], posteen[9], poteens[9], poetess[9], stepson[9], cossets[9], possets[9]

6 letter words

hyphen[17], psyche[16], psycho[16], psychs[16], cheths[14], echoey[14], phoney[14], cheesy[14], syphon[14], synchs[14], physes[14], hyssop[14], phyton[14], python[14], typhon[14], chesty[14], scythe[14], cheeps[13], speech[13], epochs[13], ectype[13], cotype[13], sheesh[12], sheeny[12], honeys[12], hoseys[12], hysons[12], ethyne[12], echoes[11], chosen[11], sphene[11], phones[11], choses[11], coshes[11], thence[11], techno[11], etches[11], stench[11], tophes[11], chests[11], thesps[11], coneys[11], cyeses[11], sycees[11], coseys[11], pyoses[11], sepoys[11], sysops[11], peyote[11], encyst[11], spence[10], copens[10], ponces[10], copses[10], scopes[10], pecten[10], sheens[9], sneesh[9], noshes[9], ethnos[9], honest[9], sheets[9], theses[9], shotes[9], toshes[9], yesses[9], teensy[9], peones[8], censes[8], scenes[8], scones[8], spense[8], eposes[8], cesses[8], sepses[8], posses[8], cenote[8], poteen[8], centos[8], contes[8], topees[8], netops[8], pontes[8], scents[8], cestos[8], cosets[8], cosset[8], escots[8], steeps[8], estops[8], pestos[8], posset[8], ptoses[8], stopes[8], nesses[6], senses[6], tenses[6], setose[6], onsets[6], setons[6], stenos[6], stones[6], tosses[6]