Hiragana あ and お may become confusing

• if there is an extra short stroke in あ
  OR
• if the second stroke of お is separated into two strokes 十 and の.

Hiragana い and り may become indistinguishable

• if the second stroke of い is too long
  OR
• if the second stroke of り is too short.

Hiragana う and ら may become indistinguishable

• if the second stroke of う is too emphatic at the beginning
  OR
• the beinning part of the second stroke of ら is short and not vertical.

Hiragana す and お may become indistinguishable

• if the loop of the second stroke of す is too wide to the right
  OR
• if the ending loop of the second stroke of お is too tight
  and dragged down (with the third stroke, it may look like ず)

Hiragana お and む may become indistinguishable

• if the ending loop of the second stroke of お is deformed
  OR
• if the ending of the second stroke of む is deformed

Hiragana わ and れ may become indistinguishable

• if the ending loop of the second stroke of わ is not curved left
  OR
• if the ending of the second stroke of れis not curved right

If the ending of the last stroke of these characters has a too much/little curl,
each character may be confused for another.

Hiragana ち is NOT a mirror image of hiragana さ strictly speaking,
but they may look like the other

• if the second stroke of ち is separated into two strokes,
  OR
• if さ is flipped horizontally. (If さ is written in a different font (さ),
  the similarity between flipped さ and ち is more striking.)

Hiragana ま may look like hiragana ほ, or or the other way around

• if there is an extra vertical stroke in ま
  OR
• if the last stroke in ほ crosses the horizontal stroke (ー).

Hiragana よ may look like hiragana ま, or or the other way around

• if the short horizontal stroke (ー) is crossed by the second stroke in よ
  OR
• if one of the horizontal strokes in ま is missing.

Hiragana ほ may become hiragana は, or the other way around

• if the second stroke is missing from ほ
  OR
• if there is an extra horizontal stroke in は.

Hiragana き may become hiragana さ, or the other way around

• if the one of the horizontal strokes is missing from き
  OR
• if there is an extra horizontal stroke in さ.