“Regex Spellcheck” for Vietnamese

“Regex Spellcheck” (step 1) 😆

(ch|gh|kh|ngh|ng|nh|p|ph|th|tr|b|c|d|đ|g|h|gi|k|l|m|n|q|r|s|t|v|x)?
(
  	(
  		[uo]
  	)?
  	(
  		(
  			[aàảãáạăằẳẵắặâầẩẫấậeèẻẽéẹêềểễếệiìỉĩíịoòỏõóọôồổỗốộơờởỡớợuùủũúụưừửữứựyỳỷỹýỵ]
  		)
  		|
  		(
  			y[aàảãáạêềểễếệ]
  		)
  	)
	|
	(
	ia|ìa|ỉa|ĩa|ía|ịa|iê|iề|iể|iễ|iế|iệ|ưa|ừa|ửa|ữa|ứa|ựa|ươ|ườ|ưở|ưỡ|ướ|ượ|ua|ùa|ủa|ũa|úa|ụa
	)
)
(
	(i|o|u|y|m|n|ng|nh|p|t|c|ch)?
)

😛