Need more?
hagu : 剥ぐ(はぐ) [[動]動詞/Verb]
http://www.weblio.jp/content/%E5%89%A5%E3%81%90A 身につけているものを取り去る。脱がす。 「布団を−・ぐ」
A Remove what you are wearing. Remove. ex:" futon wo hagu"
Haida 剥いだ(はいだ) is 過去形(kako-kei/past form) as 能動態(noudou-tai/active voice).
Basically Verb ending -ku/く and -gu/ぐ need add "i/い" in past form(-ta/-da).
書く(ka-ku) → 書いた(ka-ita)
泣く(na-ku) → 泣いた(na-ita)
着く(tsu-ku) → 着いた(tsu-ita)
抜く(nu-ku) → 抜いた(nu-ita)
開く(hira-ku) → 開いた(hira-ita)
歩く(aru-ku) → 歩いた(aru-ita)
注ぐ(tsu-gu/soso-gu) → 注いだ(tsu-ida/soso-ida)
脱ぐ(nu-gu) → 脱いだ(nu-ida)
泳ぐ(oy-gu) → 泳いだ(oyo-ida)
急ぐ(iso-gu) → 急いだ(iso-ida)
騒ぐ(sawa-gu) → 騒いだ(sawa-ida)
But one big exception exist.
行く(i-ku/yu-ku) → 行った(i-tta), No "iita" also "yu-tta".
Also -te iku,yuku,-tte iku,yuku/-て or っていく,ってゆく Verb,too.
歩いて-いく/-ゆく(aruite-iku/-yuku) → 歩いていった(aruite-itta), No "yu-tta".
走って-いく/-ゆく(hasitte-iku/-yuku) → 走っていった(hasitte-itta), No "yu-tta".
And,
Using hiragana for 剥ぐ(剥いだ) is just hard to read for readers youngers mainly.
A lot of strokes and some specific category Kanji often using Hiragana(or Katakana) instead.
Do you think that you can read both Kanji naturally as if you were Japanese?
a) 剥ぐ/剥いだ : hagu/haida or sogu/soida(not using for futon)
b) 剥く/剥いた : muku/muita(not using for futon)
This is one of specific category related fish/魚,bird/鳥,insect/虫 and tree/木 kanji collections.
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