1choice
 2	prompt "choice"
 3
 4config A
 5	bool "A"
 6
 7config B
 8	bool "B"
 9
10if B
11choice
12	prompt "sub choice"
13
14config C
15	bool "C"
16
17config D
18	bool "D"
19
20if D
21choice
22	prompt "subsub choice"
23
24config E
25	bool "E"
26
27endchoice
28endif # D
29
30endchoice
31endif # B
32
33endchoice