Give the TNM staging for the following larynx involvement
"Groth involves medial wall of aryepiglottic fold on rt side with an extension to vallecula but not base of tongue. Both vocal cords seem to be mobile. On neck examination there is a level 3 rt sided LN, approx 4 cm in size, hard and fixed. There is no node palpable on the left side. Other investigations reveal no features of metastasis."