According to Pentecostalism/Charismaticism, can Satan understand all tongues? This question is geared towards Pentecostals and Charismatics (although all views are welcome), can Satan understand the tongues that are spoken by a person that is speaking in tongues as uttered by the Holy Spirit?  

Here is one passage that when taken literately can imply that only God can hear the spoken utterance, but it context it doesn't really hold up since the context is order of worship. but if there is no interpreter, he must keep silent in the church; and let him speak to himself and to God. (1 Cor 14:28)  

Since Satan was an angel and has been around the earth since the creation (and Babel), is it possible that he is able to understand the utterance of men and angels If I speak with the tongues of men and of angels, but do not have love, I have become a noisy gong or a clanging cymbal. (1 Cor 13:1)

One more argument that one can make is that the "Holy Spirit" is Holy and Satan is not, therefore Satan cannot understand the Holy utterances of the Holy Spirit.  But I have been unable to find biblical support for this claim.

This question popped up during a casual discussion with my Charismatic friend and I'm Pentecostal.
From experience, it is a relatively common teaching in Pentecostal and Charismatic circles that one of the benefits of praying in tongues is that Satan can't understand it (and can't stand it!).  As well as the verses you've cited, this doctrine is also supported by Romans 8:26-27 - 


  26 Likewise the Spirit helps us in our weakness. For we do not know what to pray for as we ought, but the Spirit himself intercedes for us with groanings too deep for words. 27 And he who searches hearts knows what is the mind of the Spirit, because the Spirit intercedes for the saints according to the will of God. (ESV)


For those unfamiliar with Pentecostal/Charismatic doctrine, where the bible talks about 'praying in the Spirit' it is taken as synonymous with praying in tongues (cf. 1 Cor 14:14-15)