0235 is a G. GDGD root and fifth, or a G power chord. Search in UU Uke Lessons vids for Aldrine showing it's use in Green Day's 'Time of Your Life'. It works really well in the progression he shows - G Cadd9 D.
0234 is GDGDb. Hmm, I need to put my thinking head on for that. If we're talking the key of G it's the G power chord plus the flat fifth, - you don't have a third in the chord. Is it used in the same progression the 0235 is used? or is this a purely hypothetical? If it's not in a G progression it cold theoretically be something else a bit weird. Better heads than mine (mine has +beer) will give a better answer.
0234:
Db dim no3/D (D-flat diminished no 3rd with a D in the bass (this only works in re-entrant))? If I was writing it out on a chart for my band, I would write it down as "D?".
Of course, you almost never see the 13 chord used because it's basically every note in the diatonic scale all crammed together and it doesn't sound that great. So, unless you're just hitting that C# as a passing note on your way to a different chord you probably wouldn't see the 0234 used.
That 0234sounds like a the opening chord in Joe Satriani's Lord's of Karma from Surfing with the Alien. I used to have the (guitar!) tab for it so will dig it out. If played with the (e.g D) an octave lower and then the e.g. Db above it jars but can be resolved quite nicely.