TETRAEDRON

ad ae an ar at de do ed en er et na ne no od oe on or re ta to

ado and ane ant are art ate att dan dee den doe don dor dot ear eat end eon era ere ern err eta nae nee net nod nor not oar oat oda ode one ora ore ort rad ran rat red ree ret rod roe rot tad tae tan tao tar tat tea ted tee ten tet tod toe ton tor tot

aeon aero ante dare darn dart date dato dean dear deer deet dene dent dere doat doer dona done dore dorr dote drat dree earn erne etna nard near neat need nerd nett node nota note odea orad orra rand rant rare rate rato read rear rede redo reed rend rent rete road roan roar rode rota rote tare tarn taro tart tate tear teat teed teen tend tent tern toad toea toed tone tora tore torn torr tort tote trad tree tret trod trot