This test makes sure that -apple-trailing-word: -apple-partially-balanced breaks lines correctly.
ABC DEF GHI JKL MNO PQRS TUVW XYZ ABC DEF GHI JKL
MNO
ABC DEF GHI JKL MNO PQRS TUVW XYZ ABC DEF GHI
JKL MNO
ABC DEF GHI JKL MNO PQRS TUVW XYZ ABC DEF G H
I J K
ABC DEF GHI JKL MNO PQRS TUVW XYZ ABC DEF GHI JKL
MNO PQRS
ABC DEF GHI JKL MNO PQRS TUVW XYZ ABC DEF GHI JKL
MNO PQRS TUV WXYZ ABC DEF GHI JKL MNO PQRS TUV
WXYZ