4 letters:
dana, dani, dano, dena, deno, deny, dina, dini, dino, dona, duna

5 letters:
daena, dahna, daina, daini, danae, danah, danai, danar, danau, daner, daney, danna, danni, danno, danny, dan o, dawna, dayna, deena, denae, denay, denna, denni, denno, denny, derny, dhana, dhina, dhony, dinah, diner, dinna, donah, donar, donau, donee, doner, doney, donna, donno, donny, donor, don o, doona, downy, drina, dunai, dunay, duner, dunna, dunno, dunny, dyna-

6 letters:
dannah, danner, dannie, day no, deaner, deener, deeney, deenie, dehner, deiner, deneau, denner, denney, dennie, derner, dheena, dhurna, diener, dinnae, dinner, doanna, doe ne, dohner, donais, done a, done i, donnay, donnee, donner, donnie, don ho, dooner, downer, downey, downie, down a, down i, duenow, dunner, durney, dynner

7 letters:
day now, deh nay, denault, done he, done no, down he

8 letters:
daughney, done her, done now, down her, down now

9 letters:
dan haigh