B:	The gas is not being burned completely.
b iː WORD_BOUNDARY ð ə WORD_BOUNDARY ɡ æ s WORD_BOUNDARY ɪ z WORD_BOUNDARY n ɑ t WORD_BOUNDARY b iː ɪ ŋ WORD_BOUNDARY b ɜː n d WORD_BOUNDARY k ə m p l iː t l i WORD_BOUNDARY