Radicals ( Radical745) fifteen strokes in Kanji;

dimensional, e.g.


directional, e.g.

enemy must be defeated;
foe must be defeated;
opponent must be defeated;

logical, e.g.

in Hiragana: enemy; opponent; rival;

in Kanji: enemy; foe; opponent;

in Katakana: foe; FOE;

foe is not friend;

numerological, e.g.


FOE in numerology: IFF mismatched (5-left, 5-right) root factor devices exist;

structural, e.g.

(DNA File (e.g. net _ save . dna), OS), IFF mismatched DNA (i.e. NOT "Me" , NOT "My" kind , NOT "My" structural ,  NOT "My" way) exist, 1st to determine RFC (Request For Comment), 2nd to analyze frame (Ethernet, IEEE number, OSI, protocol), 3rd to understand WHAT kinds of words (bad, good); And Then, using Artificial Intelligence to determine whether foe or not;

FOE in (1 AND 1) design: upper 1 is being against by lower 1 (call fork());
FOE in 123 design: (without consent) starting to break in;
FOE in DAL design: IFF mismatched graphics (icon, logo, OEM) exist;
FOE in military grade: IFF cannot verify radio (illegal Automotive);
FOE in Network Topology: IFF cannot verify (computer ID, computer OEM);
FOE in SQRT2 design model: IFF mismatched embedded calculator exists;