Morphological tree — lipua en

▶ lipua drift, float
▶ -kas→ liukas slippery
-taa→ liukastaa to make slippery
-tua→ liukastua to slip, to slide
▶ -ua→ liukua slide, glide
▶ -u→ liuku slide
portaat→ liukuportaat escalator