6 letters:
radant, roband

7 letters:
lab and, lac and, lad and, lag and, lag und, lak and, lap and, lat and, lob and, lob und, lok and, lop and, lot and, rab and, rad and, rag and, rak and, rap and, rat and, rat und, rob and, roc and, rod and, rot and, rot und

8 letters:
laba and, lack and, lada and, ladd and, lapp and, lata and, lobb and, loch and, lock and, lopp and, lott and, raab and, raad and, rabb and, rack and, rada and, rapp and, rata and, rat hunt, robb and, roch and, rock and, rodd and, ropp and, rott and, wrap and

9 letters:
labbe and, lappe and, latah and, latta and, locke and, lotta and, lotte and, raabe and, radha and, rappe and, ratte und, rocca and, rocke and, wrack and, wragg and

10 letters:
rabbah and, rocque and