["*(s)keu-","*(s)mer-","*(s)pen-","*(s)teg-"]
["*ad-","*ag-","*agh-","*agro-","*aik-","*aim-","*aiw-","*ak-","*akwa-","*al-","*ambhi-","*ane-","*angh-","*ant-","*apo-"]
["*bha-","*bhag-","*bhau-","*bheid-","*bheidh-","*bhel-","*bhendh-","*bher-","*bhereg-","*bhergh-","*bheudh-","*bheue-","*bheug-","*bhle-","*bhorh-"]
["*da-","*deik-","*dek-","*dekm-","*deks-","*dem-","*dent-","*der-","*deru-","*deu-","*deuk-","*dhe(i)-","*dhe-","*dheigh-","*dheigw-"]
["*ed-","*ei-","*ekwo-","*el-","*em-","*en","*er-","*ere-","*es-","*eu-","*eue-"]
["*g(a)lag-","*gal-","*gel-","*gembh-","*gene-","*genu-","*ger-","*gere-","*geus-","*ghabh-","*gheim-","*ghel-","*ghend-","*gher-","*ghere-"]
["*ka-","*kad-","*kae-id-","*kakka-","*kan-","*kand-","*kap-","*kaput-","*kar-","*ked-","*keg-","*kei-","*keie-","*kel-","*kele-"]
["*leg-","*legh-","*legwh-","*leig-","*leigh-","*leikw-","*leip-","*leu-","*leubh-","*leue-","*leuk-","*lois-"]
["*mag-","*magh-","*maghu-","*mak-","*man-","*me-","*med-","*medhyo-","*meg-","*mei-","*meigh-","*meik-","*mel-","*mele-","*melg-"]
["*nas-","*nau-","*ne-","*nebh-","*ned-","*nek-","*nem-","*ner-","*neu-","*no-men-"]
["*oi-no-","*okw-","*op-","*ost-"]
["*pa-","*paewr-","*pag-","*pau-","*ped-","*peig-","*pekw-","*pel-","*pele-","*penkwe-","*per-","*pere-","*pet-","*pete-","*peuk-"]
["*re-","*red-","*reg-","*rei-","*reig-","*reudh-"]
["*sa-","*sal-","*sawel-","*sed-","*segh-","*sek-","*sekw-","*sem-","*sen-","*ser-","*skei-","*skel-","*sker-","*skeud-","*skoto-"]
["*tag-","*teks-","*tem-","*ten-","*tere-","*terkw-","*ters-","*teue-","*teuta-","*tkei-","*tolkw-","*trep-"]
["*uper","*upo"]
["*wal-","*we-","*wed-","*weg-","*wegh-","*wei-","*weid-","*weik-","*weip-","*wekw-","*wel-","*wen-","*wer-","*were-o-","*werg-"]
["*ye-","*yeug-"]