可通

可通	kě tōng	passable / possible to reach
可	kě	(prefix) can; may; able to; -able / to approve; to permit / to suit / (particle used for emphasis) certainly; very / but; however
可	kè	used in 可汗
通	tōng	to go through / to know well / (suffix) expert / to connect / to communicate / open / to clear / classifier for letters, telegrams, phone calls etc
通	tòng	classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)