Irregullar Verb:Behold, Begin, 

Behold

(+) I can behold you from mountain

(-) we can't behold you from here

(?) they can behold us from here? 

Begin

(+) then i begin playing Games

(-) you can't just playing games

(?) did you just begin playing games

Bend

(+) He can bend Some metal

(-) you can't bend some metal

(?) She Can bend Metal?