Original sentence: It is a pidgin based primarily on Motu; phonological and grammatical differences mean that Hiri Motu speakers cannot understand Motu, though the languages are lexically very similar.It was in fact the first language of many people whose parents came from different language groups
Edited sentence: It is a simplified version of Motu - although it is strictly neither a pidgin nor a creole it possesses some features of both); phonological and grammatical differences mean not only that Hiri Motu speakers cannot understand Motu, but also that Motu speakers not exposed to Hiri Motu have similar difficulties, though the languages are lexically very similar.It was in fact the first language of many people whose parents came from different language groups (typically the children of policemen and other public servants)