YOU SAID:

I'm fast..... when I'm catching sticks outside in the grass

INTO JAPANESE

私は速い……草の中で棒を外で捕まえる

BACK INTO ENGLISH

I am fast ... ... catch the stick outside in the grass

INTO JAPANESE

私は速いです... ...芝生の中で外の棒を捕まえる

BACK INTO ENGLISH

I am fast ... ... catch the outside stick in the lawn

INTO JAPANESE

私は速いです... ...芝生の外側の棒

BACK INTO ENGLISH

I am fast ... ... outside lawn bar

INTO JAPANESE

私は速いです... ...外の芝生バー

BACK INTO ENGLISH

I am fast ... ... outside lawn bar