diff --git a/data/normalization/en/ngrams b/data/normalization/en/ngrams
index ef97921fd1dea545681c7df7e00439f25c36a98e..20174559c1c7a8d83891663cf8e456fe1dd1945e 100644
--- a/data/normalization/en/ngrams
+++ b/data/normalization/en/ngrams
@@ -227,5 +227,24 @@ gonna	going to	0
 ain't	is n't	0
 Gonna	Going to	0
 Wanna	Want to	0
-I gotta	I have to	0
+I gotta	I have got to	0
 gotta	got to	0
+dunno	do n't know	0
+oughta	ought to	0
+kinda	kind of	0
+kindsa	kinds of	0
+lemme	let me	0
+gimme	give me	0
+outta	out of	0
+lotsa	lots of	0
+whatcha	what are you	0
+shoulda	should have	0
+coulda	could have	0
+woulda	would have	0
+'cos	because	0
+'cause	because	0
+hasta	has to	0
+hafta	have to	0
+needa	need to	0
+lotta	a lot of	0
+getcha	get you	0