HETEROCYSTS

eh er es et he ho oe oh or os oy re sh so to ye yo

cee cor cos cot coy cry ere ers ess eth eye her hes het hey hoe hos hot hoy oes ohs orc ore ors ort ose rec ree res ret rho roc roe rot rye sec see ser set she shy sos sot soy sty tee tet the tho thy toe tor tot toy try tye yeh yes yet

cees cere cero cess cete core cors cory cosh coss cost cosy cote cots coys cyst eche echo echt eery eros erst eses etch eths eyer eyes eyre here hero hers hest hets hoer hoes hose host hots hoys hyte orcs ores orts oses oyer oyes recs rees resh rest rete rets rhos rocs roes rose rosy rote rots ryes ryot scot scry secs sect seer sees sere sers sets sett shes shoe shot sore sort soth sots soys stet stey stot stye syce tech tees test teth tets thee they thro toes torc tore tors tort tory tosh toss tost tote tots toys tree tres tret trey trot troy tyee tyer tyes tyre tyro yech yett yore