An MP will be 
_____ with another MP from an opposing party and both will agree not to
vote in a division, or series of divisions. This is an informal arrangement which depends 
on trust between MPs and party whips. As such, 
Hansard (the record of parliamentary
proceedings) doesn’t record which MPs are 
_____, but if you cannot see your MP’s
name on the division lists for a particular list it may explain their absence.