fu Function1()
endf

fun Function2()
endfu

func Function3()
endfun

funct Function4()
endfunc

functi Function5()
endfunct

functio Function6()
endfuncti

function Function7()
endfunctio

function Function8()
endfunction

fu! FunctionWithBang1()
endf

fun! FunctionWithBang2()
endf

" Cheating a bit, don't bother checking func!, funct!, functi! and functio!...
function! FunctionWithBang3()
endf