Lagu....

I sing a song
I am singing a song
I have sung a song
I have been singing a song
          I sang a song
          I was singing a song
          I had sang a song
          I had been singing a song
I Will sing a song
I will be singging a song
I will have sung a song
I will have been singging a song
          I would singing a song
          I would be singing a song
          I would have sung a song
          I would have been singging a song
oh my tenses.......................................