It's basically just the same chords throughout the whole song.

Capo on 2nd fret

D (xx0232@1)         AJigeum (x02220@1)naega haneun yaegi
                   BmNeol (x24432@1)apeuge halji molla
                            GAma (320003@1)nal jukdorok miwohage doel kkeoya

D (xx0232@1)         ANaega (x02220@1)yejeon gatji antadeon ne mal
                   BmModu (x24432@1)teullin mareun aniya
                            GNado (320003@1)byeonhaebeorin naega nat seolgimanhae

D (xx0232@1)         ANeomu (x02220@1)chakhan neonde neon geudaeroinde Oh
                   BmI (x24432@1)don't know I don't know
               GNaega (320003@1)wae ireoneunji

D (xx0232@1)         AGeutorok (x02220@1)saranghaenneunde neon yeogi inneunde Oh
      BmI (x24432@1)don't know
             GIje (320003@1)nal chatgo sipeo

D (xx0232@1)         ABaby (x02220@1)I'm sorry neowa isseodo nan lonely
                   BmSaranghagin (x24432@1)naega bujokhanga bwa
                           GIreon (320003@1)motnan nal yongseohae

D (xx0232@1)         AI'm (x02220@1)sorry ige neowa naui story
                   BmSarangiran (x24432@1)naegen gwabunhanga bwa
                            GNe (320003@1)gyeote isseodo

D (xx0232@1)         ABaby (x02220@1)I'm so lonely lonely lonely lonely lonely
                   BmBaby (x24432@1)I'm so lonely lonely lonely lonely lonely
                            GBaby (320003@1)I'm so lonely lonely lonely lonely lonely
Baby I'm so lonely lonely lonely lonely lonely
[CL]
Nega jalmotan ge anya
Naega isanghan geoya
Imi orae jeonbuteo nan junbi haenna bwa ibyeoreul
[Bom]
Jeongmal jalhaejugo sipeonneunde
Hapil sarang apeseoneun wae
Ireoke haneobsi jagajigo oerounji

[Dara]
Neomu chakhan neonde neon geudaeroinde Oh
[CL]
I don't know I don't know
Naega wae ireoneunji
[Dara]
Geutorok saranghaenneunde neon yeogi inneunde Oh
[Bom]
I don't know
[Dara]Ije nal chatgo sipeo

[CL]
Baby I'm sorry neowa isseodo nan lonely
Saranghagin naega bujokhanga bwa
Ireon motnan nal yongseohae
[Minzy]
I'm sorry ige neowa naui story
Sarangiran naegen gwabunhanga bwa
Ne gyeote isseodo

Baby I'm so lonely lonely lonely lonely lonely
Baby I'm so lonely lonely lonely lonely lonely
[CL]
Baby I'm so lonely lonely lonely lonely lonely
Baby I'm so lonely lonely lonely lonely lonely

[Minzy]
Cuz I'm just another girl
I bami werowo nan
[Bom]
Deoneun gyeondil su eobseo good bye
[Dara]
Cuz I'm just another girl
[CL]
Neomuna werowo
[Bom]
Jigeum ne gyeote isseodo baby I'm so lonely

[Minzy]
Baby I'm so lonely lonely lonely lonely lonely
Baby I'm so lonely lonely lonely lonely lonely
[CL]
Baby I'm so lonely lonely lonely lonely lonely
Baby I'm so lonely lonely lonely lonely lonely.

More lyrics: http://www.lyricsmode.com/lyrics/0-9/2ne1/#share