Some people say, "in any four natural numbers, the difference between at least two numbers is a multiple of three." is this sentence right? What do you think?

Some people say, "in any four natural numbers, the difference between at least two numbers is a multiple of three." is this sentence right? What do you think?

According to the stem analysis can be: for any four positive integers a, B, C, D divided by 3, there can be at most three different residues 0, 1, 2: (1) assuming that a, B, C residues are not the same, then the fourth number d divided by 3 can only be a residue of 0, 1, 2, so it is the same as a residue of a, B, C