restrict Format viewchilds

=======================
Code:
==============================================================================================================
@ViewChild('noNumericCharsInput1', { static: true }) noNumericCharsInput1!: IonInput;
@ViewChild('noNumericCharsInput2', { static: true }) noNumericCharsInput2!: IonInput;
...
@ViewChild('noNumericCharsInputN', { static: true }) noNumericCharsInputN!: IonInput;

viewChildsInputBehaviours: Subscription[] = [];

ngAfterViewInit() {
  this.setNonNumericCharsRestriction(this.noNumericCharsInput1);
  this.setNonNumericCharsRestriction(this.noNumericCharsInput2);
  ...
  this.setNonNumericCharsRestriction(this.noNumericCharsInputN);
}
setNonNumericCharsRestriction(input: IonInput) {
  let sub: Subscription = input.ionInput.subscribe((ev: any) => {
    const value = ev.target.value;
    const filteredValue = value.replace(/[^a-zA-Z]+/g, '');
    input.value = filteredValue;
  });
  this.viewChildsInputBehaviours.push(sub);
}
ionViewWillLeave() {
  for (let i = 0; i < this.viewChildsInputBehaviours.length; i++) {
    const sub = this.viewChildsInputBehaviours[i];
    sub.unsubscribe();
 
  this.viewChildsInputBehaviours = []; }
}
=======================
Template:
==============================================================================================================
<ion-input type="text" #noNumericCharsInput1 ></ion-input>
<ion-input type="text" #noNumericCharsInput2 ></ion-input>
... 
<ion-input type="text" #noNumericCharsInputN ></ion-input>
<ion-input type="text" ></ion-input
<ion-input type="text" ></ion-input
<ion-input type="text"  #specificFormat ></ion-input>
<ion-input type="number" ></ion-input
<ion-input type="tel" ></ion-input>