Is it permissible to mix the lengths of al maddul aarid lis sukoon during a single recitation?

Question
Assalaamu Alaikum


Is it permissible to mix the lengths of al maddul aarid lis sukoon during a single recitation? e.g. 2 counts at the end of verse 1 and four at the end of verse 2 and so on.

JazaakAllah.

Answer
 Wa alaikum assalaam wa rahmatullahi wa barakatuh,
Proper recitation would have consistency in  during a single recitation.  The reciter is free to change the length in each sitting, but should have the same length in each single separate recitation. 
And Allah knows best.
Wa iyyaakum.
Wa assalaam alaikum