A tag is string of twenty two characters grouped in three 4-letters sets and one 10-letters set [4-10-4-4], the 10 letters ends with two digits to indicate the language variety while the rest of letters have their different grammatical notation, each letter may have different representation depending on the set it resides in and the specific position it occupies, basically the tag string is case sensitive and broadly categorized as follows {syntax}{morphology}{semantics}{ontology}.