1	And, But, Because, So	12	Simple Past & Present Perfect Tense
2	Adjectives - Adverbs	13	So... that    Such ... that
3	too- enough	14	Would you like ...?
4	Should - Shouldn't	15	so that, in case
5	Past continuous Tense	16	Would rather, Prefer
6	Simple Past Tense 1	17	Suggestions
7	Simple Past Tense 2	18	If Clauses Type 0 -1
8	When - While	19	Can - Could
9	Present Perfect Tense 1	20	Must - Have to
10	Present Perfect Tense 2	21	May - Mght
11	too, either, so, neither