The odd one out

Challenge #1 in the Visual versus Frontal Cortex series. Hosted by Xscream.
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Find something repetitive, with one exception. For example a lot of apples with one pear, orange flowers with just one yellow one in between, or some young people with one old person in their middle.
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133 entries
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Church Pews and Hymnals
Plain vs victorian
What street did you say!
can I join?
Blue!
Calm down everybody ... I'm in charge here!!!
The intruder
Hey, you are going the wrong way!!
Yellow among red
3 forks and 1 spoon
a rose between flowers
The Calm Before the Storm
Rose
The black sheep...
Football Stadium
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