Gravir belong to the 2
nd group.																			Gravir is a common french verb.
																																													
																									Gravir is conjugated the same way that verbs that end in : 
-ir
																									Gravir is conjugated with 
auxiliary avoir.
																																									Gravir verb is
									direct transitive, indirect transitive.
																																																	
Gravir verb is a direct transitive verb, so passive voice can be used.