Angular - How to create Formgroup on Loop.md

How to create FormGroup on Loop?

Class

export class SkillsComponent {
  skills = new FormArray([]);

  addSkill() {
    const group = new FormGroup({
      level: new FormControl(''),
      name: new FormControl('')
    });

    this.skills.push(group);
  }
}

HTML

<div *ngFor="let skill of skills.controls;">
  <ng-container [formGroup]="skill">
    <input formControlName="level" />
    <input formControlName="name" />
  </ng-container>
</div>