SEROTONINS

en er es et in is it ne no oe oi on or os re si so ti to

ens eon ern ers ess inn ins ion ire its net nit noo nor nos not oes one ono ons oot ore ors ort ose rei res ret rin roe rot sei sen ser set sin sir sis sit son sos sot sri ten tie tin tis toe ton too tor

eons erns eros erst inns inro into ions ires iron neon ness nest nets nine nite nits noes noir none noon nori nose note ones onos onto oots ores orts oses rein reis rent rest rets rins riot rise rite roes root rose rote roti roto rots seis sent sers sets sine sins sire sirs site sits snit snot sone sons soon soot sore sori sorn sort sots sris stir tens tern tier ties tine tins tire tiro toes tone tons toon tore tori torn toro tors toss tres trio