Mode := 0

vk56::    ;  "V"
    N := 0
    Mode := ++Mode > 3 ? 1 : Mode
    SetTimer, LoopSend, Off
    
    If Mode = 1
        This := [[6, 200], [4, 3100]]
    Else If Mode = 2
        This := [["Q", 200], ["W", 400], ["E", 600]]
    Else If Mode = 3
        GoTo Mode3
    
LoopSend:
    SetTimer, LoopSend, % "-" . This[N := ++N > This.MaxIndex() ? 1 : N, 2]
    SendInput % This[N, 1]
    Return
  
Mode3:
    SendInput 4
    Return

#MaxThreadsPerHotkey, 2

v::
    If A_IsPaused
    {
        Pause, Off
        Return
    }
    Else
    {
        If Running
        {
            Send, 4
            Pause, On, 4
        }
        Else
        {
            Running := True
            Loop
            {
                Send 6                  
                Sleep, 200              
                Send 4                  
                Sleep, 3100             
            }
        }
    }
Return