We W|IH need N|IH|D N|I|JH N|IH|JH to T|O estimate I|S|T|AX|M|AX|T EH|SH|T|AX|M|AX|T I|SH|T|AX|M|AX|T the D|AX number N|O|M|B|ER N|AH|M|B|I R N|O|M|B|I R of O|V AH|B O|B work W|I R|K hours A + UH|I R|Z A + UH|ER|S A + UH|I R|S spent SH|P|EH|N|T S|P|I|N|T SH|P|I|N|T on U|N this D|IH|S DH|I|S D|I|S DH|IH|SH D|IH|SH DH|I|SH D|I|SH project P|R|U|JH|EH|K|T P|R|AA|JH|I|K|T P|R|U|JH|I|K|T