s/^/	moo:cow	baa:sheep	quack:duck	oink:pig/
s/\S\+/And on his farm he ha:3:&2With a1 &-& here, an:3&-& there.\nH3&, th3&, everywh3&-&.\n	\n/g
:
s/3/ere:d a /g
s/:\w*:*//g
s/1\([^	]*\)	.	[^	]*\|1/:&A\1/
s/	/Old MacDonald ha:3farm2/
s/2/, E-I-E-I-O.\n/
t
s/ oi/n&/g