The pound left the three-week lows after weak US data and Irish border headlines. However, Brexit uncertainty will most likely limit its advance.
The main scenario is a growth towards 1.2350.
An alternative scenario is a decline to 1.2230.
Buy the pound to 1.2350 when the pair breaks above 1.2320.
Sell towards 1.2230 after a break below 1.2270.