SN4 ""

No	Pattern	Freq
1	although it is [adv] [verb]	89
2	although it is [adv] [verb]	89
3	although it is [adv] [vb pp]	81
4	although it is [adv] [verb]	63
5	although it is not [verb]	26
6	although it is [not/n't] [verb]	26
7	although it is not [verb]	26
8	although it is [adv] know	11
9	although it is [adv] known	11
10	although it is now [verb]	8
11	although it is now [verb]	8
12	although it is often [verb]	7
13	although it is often [verb]	7
14	although it is sometimes [verb]	6
15	although it is generally [verb]	6
16	although it is sometimes [verb]	6
17	although it is generally [verb]	6
18	although it is [adv] [v-ing]	5
19	although it is widely [verb]	5
20	although it is widely [verb]	5