three and four months
three and four month
det:num coord det:num n
three and four months .
θ ɹ iː WORD_BOUNDARY æ n d WORD_BOUNDARY f oː ɹ WORD_BOUNDARY m ʌ n θ s WORD_BOUNDARY
t h r e e WORD_BOUNDARY a n d WORD_BOUNDARY f o u r WORD_BOUNDARY m o n t h s WORD_BOUNDARY