1*e657bbdcSRichard Smithmodule a {
2*e657bbdcSRichard Smith  module a1 { header "a1.h" export * }
3*e657bbdcSRichard Smith  module a2 { header "a2.h" export * }
4*e657bbdcSRichard Smith}
5*e657bbdcSRichard Smithmodule b {
6*e657bbdcSRichard Smith  module b1 { header "b1.h" export * }
7*e657bbdcSRichard Smith  module b2 { header "b2.h" export * }
8*e657bbdcSRichard Smith}
9*e657bbdcSRichard Smithmodule c {
10*e657bbdcSRichard Smith  module c1 { header "c1.h" export * }
11*e657bbdcSRichard Smith}
12*e657bbdcSRichard Smithmodule d {
13*e657bbdcSRichard Smith  module d1 { header "d1.h" export * }
14*e657bbdcSRichard Smith}
15