TETRAHEDRON

ad ae ah an ar at de do ed eh en er et ha he ho na ne no od oe oh on or re ta to

ado and ane ant are art ate att dah dan dee den doe don dor dot ear eat edh end eon era ere ern err eta eth had hae hao hat hen her het hod hoe hon hot nae nah nee net nod noh nor not nth oar oat oda ode one ora ore ort rad rah ran rat red ree ret rho rod roe rot tad tae tan tao tar tat tea ted tee ten tet the tho tod toe ton tor tot

aeon aero ahed ante dare darn dart date dato dean dear deer deet dene dent dere doat doer dona done dore dorr dote doth drat dree earn eath erne etna hade haed haen haet hand hant hard hare hart hate head hear heat heed hent herd here hern hero hoar hoed hoer hone hora horn nard near neat need nerd nett node nota note oath odah odea ohed orad orra rand rant rare rate rath rato read rear rede redo reed rend rent rete rhea road roan roar rode rota rote tahr tare tarn taro tart tate tear teat teed teen tend tent tern teth thae than that thee then thro toad toea toed tone tora tore torn torr tort tote trad tree tret trod trot