/usr/lib/mono/Microsoft SDKs/F#/ is in fsharp 4.0.0.4+dfsg2-2.
This file is owned by root:root, with mode 0o755.
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/usr/lib/mono/Microsoft SDKs/F#/3.0/
/usr/lib/mono/Microsoft SDKs/F#/3.0/Framework/
/usr/lib/mono/Microsoft SDKs/F#/3.0/Framework/v4.0/
/usr/lib/mono/Microsoft SDKs/F#/3.0/Framework/v4.0/Microsoft.FSharp.Targets
/usr/lib/mono/Microsoft SDKs/F#/3.0/Framework/v4.0/Microsoft.Portable.FSharp.Targets
/usr/lib/mono/Microsoft SDKs/F#/3.1/
/usr/lib/mono/Microsoft SDKs/F#/3.1/Framework/
/usr/lib/mono/Microsoft SDKs/F#/3.1/Framework/v4.0/
/usr/lib/mono/Microsoft SDKs/F#/3.1/Framework/v4.0/Microsoft.FSharp.Targets
/usr/lib/mono/Microsoft SDKs/F#/3.1/Framework/v4.0/Microsoft.Portable.FSharp.Targets
/usr/lib/mono/Microsoft SDKs/F#/4.0/
/usr/lib/mono/Microsoft SDKs/F#/4.0/Framework/
/usr/lib/mono/Microsoft SDKs/F#/4.0/Framework/v4.0/
/usr/lib/mono/Microsoft SDKs/F#/4.0/Framework/v4.0/Microsoft.FSharp.Targets
/usr/lib/mono/Microsoft SDKs/F#/4.0/Framework/v4.0/Microsoft.Portable.FSharp.Targets