As a third example we can encode the word BLACKGUARD. Largely because it demonstrates rule 5, as well as lets us see rule 3 a little better.
Step 1, B-LACKGUARD
Then we encode the letters
L:4
C:2
K:2
G:2
R:6
D:3
Step 2: B-4a222ua63
Step 3, collapsing adjacent identical digits, returns : B-4a2ua63
Step 4 removes all non-encoded letters, B-4263
Step 5 truncates to 3-digits, leaving us B-426
The SNDX value for BLACKGUARD is B-426 (BLKR)