ABCD

• 4-3-2-A in a lowball hand*

• Alphabet beginning

• Alphabet intro

• Alphabet opener

• Alphabet opening

• Alphabet run

• Alphabet Song start

• Alphabet start

• Alphabetic quartet

• Alphabetic starters

• Alphabetical run

• Alphabetical start

• Beginning in first grade

• Big Bird song title word, Pt. 1

• Black verse rhyme scheme

• Children's song start

• Children's tune starter

• E preceders

• Fastest Finger answer, maybe

• First four of 26

• First line of a popular children's song

• Four to start with

• Free verse rhyme scheme

• Initial alphabetic sequence

• Initial foursome

• Initial letters

• Initial quartet

• Initial sequence

• Introductory letters

• Kid's song start

• Kiddie song start

• Kiddies' song starter

• Kindergarten quartet

• Kindergarten song opening

• Kindergarten song starter

• Leading four

• Letter openers?

• Letters of introduction?

• Lyric segment with the same melody as Twinkle, twinkle

• Multiple choice choices

• Multiple choice choices, often

• Multiple choice list, often

• Multiple choice options

• Nursery rhyme opening

• Nursery school song opener

• Opening alphabet letters

• Opening four

• Opening foursome

• Opening in a popular song for kindergartners

• Opening letters

• Opening lyrics of a children's tune

• Opening of The Alphabet Song

• Opening quartet

• Opening run

• Passing grades

• Quartet for first graders

• Report-card foursome

• Run before E

• Start of a childhood learning song

• Start of a children's rhyme

• Start of a children's song

• Start of a classroom chant

• Start of a common run

• Start of a kindergarten chant

• Start of a kindergarten song

• Start of a learning song

• Start of a nursery rhyme

• Start of a nursery-school song

• Start of a preschool song

• Start of a series

• Start of a Sesame Street lesson

• Start of a song that ends Won't you come and sing with me

• Start of a toddler's song

• Start of a tot's chant

• Start of a tot's song

• Start of a tot's tune

• Start of a traditional school song

• Start of a well-known series

• Start of an alphabet song

• Start of an old school song

• Start of Series I

• Start of The Alphabet Song

• Starting four

• Starting lineup

• The Alphabet Song beginning

• The Alphabet Song start

• The front four

• They lead to E

• Tot's song start

• Well-known beginning

• Who Wants to Be a Millionaire? choices

ABCD — A Better Circuit Description language — усовершенствованный язык описания [электрических] схем, язык АВСО.

[Пройдаков Э. М., Теплицкий Л. А. Англо-русский словарь терминов и сокращений по ВТ, Интернет и программированию, — М.: «СК Пресс», 1998. — 288 с.]