Rock rock bumpy rock, Rock rock big big rock
Rolling rolling where are you heading rock
A big bumpy rock gets broken broken
A big rock becomes little rock  
Rock rock bumpy rock, Rock rock little rock
Rolling rolling where are you heading rock
A small bumpy rock gets broken broken
A small rock becomes pretty rock
Stone stone bumpy stone, Stone stone pretty stone
Rolling rolling where are you heading stone
Bumpy pretty stone gets broken broken
Pretty stone becomes cute pebble   
One bumpy pebble, very cute pebble 
Rolling rolling where do you go pebble
Bumpy cute pebble gets broken broken
Now it becomes very small sand