What does Leviticus 13:21 mean?

But if the priest look on it, and, behold, there be no white hairs therein, and it be not lower than the skin, but be dim; then the priest shall shut him up seven days:

But if the priest look on it, and, behold, there be no white hairs therein, and if it be not lower than the skin, but be somewhat dark; then the priest shall shut him up seven days:

But if the priest look on it, and, behold, there be no white hairs therein, and it be not lower than the skin, but be dim; then the priest shall shut him up seven days:

But if, after looking at it, he sees that there are no white hairs on it, and it is not deeper than the skin, and it is not very bright, then let the priest keep him shut up for seven days:

`And if the priest see it, and lo, there is no white hair in it, and it is not lower than the skin, and is become weak, then hath the priest shut him up seven days;

But if the hair be of the former colour, and the scar somewhat obscure, and be not lower than the flesh that is near it: he shall shut him up seven days.

But if the priest look on it, and behold, there are no white hairs therein, and it is not deeper than the skin, and is pale, the priest shall shut him up seven days;