What does Leviticus 5:2 mean?

Or if any one touch any unclean thing, whether it be the carcass of an unclean beast, or the carcass of unclean cattle, or the carcass of unclean creeping things, and it be hidden from him, and he be unclean, then he shall be guilty.

Or if a soul touch any unclean thing, whether it be a carcase of an unclean beast, or a carcase of unclean cattle, or the carcase of unclean creeping things, and if it be hidden from him; he also shall be unclean, and guilty.

Or if any one touch any unclean thing, whether it be the carcass of an unclean beast, or the carcass of unclean cattle, or the carcass of unclean creeping things, and it be hidden from him, and he be unclean, then he shall be guilty.

If anyone becomes unclean through touching unconsciously some unclean thing, such as the dead body of an unclean beast or of unclean cattle or of any unclean animal which goes flat on the earth, he will be responsible:

`Or when a person cometh against any thing unclean, or against a carcase of an unclean beast, or against a carcase of unclean cattle, or against a carcase of an unclean teeming creature, and it hath been hidden from him, and he unclean, and guilty;

Whosoever toucheth any unclean thing, either that which hath been killed by a beast, or died of itself, or any other creeping thing: and forgetteth his uncleanness, he is guilty, and hath offended.

Or if any one touch any unclean thing, whether it be the carcase of an unclean beast, or the carcase of unclean cattle, or the carcase of an unclean crawling thing, and it be hid from him, — he also is unclean and guilty;