Divide the words into two columns according to pronunciation of the underlined part

Exercise 1: Divide the words into two columns according to pronunciation of the underlined part.
thief teeth leather thing mouth
they father this health smooth
than thirsty there other through
three cloth thigh those either
month three breath width strength
another author together with breathe
           /θ/                                  /ð/
                                             
 
................................     .................................
.................................     .................................
.................................     .................................
.................................     .................................
.................................     .................................