In the Part 1, we discussed about the basic katakana table.

　ア(a)　イ(i)　ウ(u)　エ(e)　オ(o)

　カ(ka)　キ(ki)　ク(ku)　ケ(ke)　コ(ko)

　サ(sa)　シ(shi)　ス(su)　セ(se)　ソ(so)

　タ(ta)　チ(chi)　ツ(tsu)　テ(te)　ト(to)

　ナ(na)　ニ(ni)　ヌ(nu)　ネ(ne)　ノ(no)

　ハ(ha)　ヒ(hi)　フ(fu)　ヘ(he)　ホ(ho)

　マ(ma)　ミ(mi)　ム(mu)　メ(me)　モ(mo)

　ヤ(ya)　　　　　ユ(yu)　　　　　ヨ(yo)

　ラ(ra)　リ(ri)　ル(ru)　レ(re)　ロ(ro)

　ワ(wa)　　　　　　　　　　　　　ヲ(wo)

And in the Part 2, we discussed about the additional table with Dakuten (濁点, cloudy tone mark).

　ガ(ga)　ギ(gi)　グ(gu)　ゲ(ge)　ゴ(go)

　ザ(za)　ジ(ji)　ズ(zu)　ゼ(ze)　ゾ(zo)

　ダ(da)　ヂ(ji)　ヅ(zu)　デ(de)　ド(do)

　バ(ba)　ビ(bi)　ブ(bu)　ベ(be)　ボ(bo)

And in the Part 3, we discussed about the additional table with Han-Dakuten (半濁点, half-cloudy tone mark).

　パ(pa)　ピ(pi)　プ(pu)　ペ(pe)　ポ(po)

And in the Part 4, we discussed about the prolonged mark (長音記号).

　ー(the pronunciation differs depending on which letter exists just before the mark)

And in the Part 5, we discussed about the ン, the n note of the word such as trans.

　ン(nn)

And in the Part 6, we discussed about the ァ, ィ, ゥ, ェ, and ォ.
These are the small forms of アイウエオ.

　ァ(xa), ィ(xi), ゥ(xu), ェ(xe), ォ(xo),

Following the table above, you can spell following words in Japanese.

English words Japanese pronunciation Katakana

Christopher Kurisutofa- クリストファー

Tea Spoon Ti- Spu-n ティー・スプーン

And in the Part 7, we discussed about the ャ, ュ, and ョ.

English words Japanese pronunciation Katakana

Japanese JAPANI-ZU ジャパニーズ

Cute Kyu-to キュート

Offshore Ofushoa オフショア

Today, let's talk about ッ, "small" version of ツ.

With this letter, you can describe "hopping" sound.

English words Japanese pronunciation Katakana

Happy Happi- ハッピー

Lucky Lakki- ラッキー

Rock Rokku ロック

Pop Poppu ポップ

Note that this sound don't come before A, I, U, E, and O.
You can know if you write it in Roman alphabet.
ハッア is something like HaAA.
This is funny.
This sound can hardly be before Na, Ni, Nu, Ne, No, Ma, Mi, Mu, Me, and Mo too.
I hope you can develop some easy spell-checking tool with this rule.

Let's talk about ン the next time (two week lator).