SN4 ""

No	Pattern	Freq
1	had once [vb pp]	630
2	had once say	33
3	had once said	33
4	had once tell	29
5	had once told	29
6	had once belong	20
7	had once belonged	20
8	had once have	19
9	had once had	19
10	had once seen	16
11	had once see	16
12	had once lived	14
13	had once live	14
14	had once stand	12
15	had once describe	12
16	had once described	12
17	had once stood	12
18	had once made	12
19	had once make	12
20	had once thought	11
21	had once think	11
22	had once work	10
23	had once taken	10
24	had once worked	10
25	had once take	10
26	had once held	9
27	had once hold	9
28	had once known	9
29	had once know	9
30	had once find	8