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Contents

Determine if a word or phrase is an isogram.

An isogram (also known as a "nonpattern word") is a word or phrase without a repeating letter, however spaces and hyphens are allowed to appear multiple times.

Examples of isograms:

- lumberjacks
- background
- downstream
- six-year-old

The word *isograms*, however, is not an isogram, because the s repeats.

## Source

[https://en.wikipedia.org/wiki/Isogram](https://en.wikipedia.org/wiki/Isogram)

## Submitting Incomplete Solutions
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Version data entries

68 entries across 68 versions & 1 rubygems

Version Path
trackler-2.2.1.159 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.158 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.157 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.156 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.155 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.154 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.153 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.152 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.151 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.150 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.149 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.148 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.147 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.146 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.145 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.144 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.143 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.142 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.141 tracks/prolog/exercises/isogram/README.md
trackler-2.2.1.140 tracks/prolog/exercises/isogram/README.md