a	b
14	aaa
a	b
15	bbb
a	b
16	ccc
a	b
15	bbb
a	b
22	iii
a	b
21	hhh
a	b
20	ggg
a	b
14	aaa
a	b
a	b
22	iii
a	b
21	hhh
a	b
22	iii
a	b
a	b
15	bbb