3 letters

bec ∙ dec eec fec Mec nec Oec Pec ∙ Rec ∙ sec ∙ Tec ∙

4 letters

haec Alec ∙ Opec Spec ∙ prec msec nsec psec exec ∙

5 letters

rebec ∙ xebec ∙ zebec ∙ codec ∙ Kmiec allec Olmec cumec ∙ donec kopec espec varec ∙ direc korec BuREC cosec ∙ IPsec cusec ∙ exsec Notec Aztec

6 letters

Chebec ∙ Quebec Malbec limbec ∙ lokiec dielec Ufimec Utimec selnec fennec ∙ zarnec ∙ Aldrec tanrec ∙ tenrec ∙ entrec arcsec ∙ parsec ∙ clusec Toltec Inotec Mixtec DryTec korzec

7 letters

geelbec crombec ∙ Targhec apothec garniec Dunajec kylikec tepanec tendrec Liberec gomerec demisec nanosec zacatec yucatec Rinatec mazatec Zapotec Cytotec Huastec Gleevec Altivec

8 letters

Kennebec chisedec hypothec ∙ orreriec Ljubimec Lyubimec chapanec tecpanec Coatepec handspec filespec millisec forinsec ∙ microsec versatec jacaltec tzapotec Polartec

9 letters

Sosnowiec Zgorzelec Chichimec chiapanec Kalitinec Povirovec

10 letters

bibliothec pianistiec Megaparsec ∙ dekaparsec Kiloparsec ∙

11 letters

Melchisedec motozintlec Chapultepec Tehuantepec

Words with a ∙ are valid Scrabble words (SOWPODS word list)