Adjectives with the MODIFIER suffix -pela (e.g. bikpela 'big') precede the noun. A small set of adjectives not ending in -pela also precede the noun – e.g. liklik 'small', lapun 'old, elderly'. Other adjectives follow the noun – e.g. nogut 'bad', malomalo 'soft', aipas 'blind'.
-pela, from English fellow, is often reduced to -pla or -la. It has a dual role in forming plural form of pronouns (mi - sing; mipela - pl) and as an adjectiveal suffix on (mainly) monosyllabic adjectives.
Source: nd