DETAILED NOTES ON SPELLING RULES

If doubtful about ie or ei, when the sound with the vowel is as In short /i:/, we spell it ie; but following the letter c, we spell it ei:Period four: HDSL2 was established in 2000 to obtain exactly the same knowledge rate and line array as HDSL using only one pair of wiring as opposed to the two pairs wanted by HDSL. Each HDSL and HDSL2 use CSA (p