pot͡ɕaʃ-petərkalaʃ (-am)-(-em)
{verb I – verb II} 1. to open and close
♦ klasːəm pot͡ɕaʃ-petərkalaʃ (-am)-(-em) {verb I – verb II} to open and close class rooms
--"PARENT"--> pot͡ɕam
--"PARENT"--> petərkalem