Its length is six “Qat”. The begining part of “baa” that is from the upper to the plinth is Two “qat” in length. And beginning part of bay is one qat above then the rest of the part. Types of “bay” are written next. Second “baa” whose upper starting part is not circular. Its beginning part is bent down from the nib of the pen. Its length is also two “qat”. One of its type is “Maqoof” that is larger.