The third level consists of two parts (books), each of which includes 8 units (total of 16 units). Each unit consists of 7 lessons, constituting a total of 112 basic lessons in this level.

The fourth level consists of two parts (books), each of which includes 8 units (total of 16 units). Each unit consists of 7 lessons, constituting a total of 112 basic lessons in this level.

The fourth level consists of two parts (books), each of which includes 8 units (total of 16 units). Each unit consists of 7 lessons, constituting a total of 112 basic lessons in this level.