SN4 ""

No	Pattern	Freq
1	[verb] once [coord] for [adj]	78
2	[noun] once [coord] for [adj]	75
3	[noun sg] once [coord] for [adj]	55
4	[vb pp] once [coord] for [adj]	27
5	[adv] once [coord] for [adj]	26
6	[adv prt] once [coord] for [adj]	21
7	[to-vb] once [coord] for [adj]	19
8	[noun pl] once [coord] for [adj]	17
9	[pron] once [coord] for [adj]	14
10	[pers pn] once [coord] for [adj]	13
11	[art] once [coord] for [adj]	12
12	a once [coord] for [adj]	12
13	[art] once [coord] for [adj]	12
14	a once [coord] for [adj]	12
15	out once [coord] for [adj]	11
16	out once [coord] for [adj]	11
17	[prep] once [coord] for [adj]	10
18	[prep] once [coord] for [adj]	10
19	[vb infin] once [coord] for [adj]	9
20	[vb past] once [coord] for [adj]	8
21	[adj] once [coord] for [adj]	7
22	problem once [coord] for [adj]	7
23	[vb base] once [coord] for [adj]	7
24	it once [coord] for [adj]	6
25	it once [coord] for [adj]	6
26	[v-ing] once [coord] for [adj]	5
27	[adv] once [coord] for [adj]	5
28	problem once [coord] for [adj]	5
29	once [coord] for [adj] [adj]	5
30	once [coord] for all [adj]	5