poč́aš-petə̑rkalaš (-am)-(-em)
{verb I – verb II} 1. to open and close
♦ klassə̑m poč́aš-petə̑rkalaš (-am)-(-em) {verb I – verb II} to open and close class rooms
--"PARENT"--> poč́am
--"PARENT"--> petə̑rkalem