In essence the song is a single verse repeated each time with one bottle fewer.
One green bottle hanging on the wall.
Ten green bottles hanging on the wall.
Ten green bottles hanging on the wall ten green bottles hanging on the wall and if one green bottle should accidentally fall.
10 green bottles hanging on the wall if one green bottle accidentally falls there will be 9 green bottles hanging on the wall 9 green bottles hanging on the wall.
Ten green bottles hanging on a wall and if one green bottle should accidently fall.
Ten green bottles hanging on the wall ten green bottles hanging on the wall.
10 green bottles ten green bottles hanging on the wall ten green bottles hanging on the wall and if one green bottle should accidentally fall there ll be nin.