boolean RightCombinationPressed() {
	int buttonsStates = readButtons();
         //  true && false && true OR   false && true && false  .....

	return digitalRead(T1) == HIGH && digitalRead(T4) == HIGH && digitalRead(T3) == HIGH   ||
	       digitalRead(T1) == HIGH && digitalRead(T2) == HIGH && digitalRead(T3) == HIGH   ||
	       digitalRead(T4) == HIGH && digitalRead(T1) == LOW &&  digitalRead(T3) == LOW   ||
	       digitalRead(T1) == HIGH && digitalRead(T3) == HIGH && digitalRead(T4) == LOW;
}