SN4 ""

No	Pattern	Freq
1	[verb] what we have done	25
2	[prep] what we have done	22
3	[prep] what we have done	22
4	[conj] what we have done	21
5	[adv] what we have done	20
6	[adv] what we have done	19
7	be what we have done	18
8	[be] what we have done	18
9	[is] what we have done	17
10	[coord] what we have done	15
11	and what we have done	13
12	and what we have done	13
13	is what we have done	10
14	so what we have done	8
15	so what we have done	8
16	's what we have done	7
17	[vb infin] what we have done	7
18	of what we have done	7
19	of what we have done	7
20	at what we have done	6
21	at what we have done	6
22	[to-vb] what we have done	5
23	what we [modal v] have done	12
24	what we [vb mod] have done	12
25	what we would have done	5
26	what we have [adv] done	14
27	what we have [adv] done	13
28	what we have done be	31
29	what we have done [be]	31
30	what we have done [prep]	29