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CalTron: Pencils and patterns
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CalTron: Felt Tip Warrior
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CalTron: My son gets busy
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CalTron: Colouring with a biro
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CalTron: Scribble it hard!
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CalTron: That's just for starters
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CalTron: Black is my favourite colour
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CalTron: Dad's dodgy choice of colours
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CalTron: Felt tips ready
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CalTron: Colouring at the speed of light
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CalTron: Round and Round
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CalTron: Lots of chewed up colours
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CalTron: Which pencil to choose?
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CalTron: Felt tip FAIL
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CalTron: Colouring Sam Gilbey's pattern
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CalTron: The tower of Colour
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CalTron: Chunky purple
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CalTron: So many patterns to choose from
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CalTron: Plenty of patterns
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CalTron: Nature-loving cuckoo regiment
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CalTron: ...and another angle
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CalTron: Squirting stars
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CalTron: A.k.A part 2
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CalTron: A.k.A part 1
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CalTron: Butterfly paradise pattern
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CalTron: Quick brown fox?
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CalTron: I <3 Nature
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CalTron: Mixtape
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CalTron: Tweee!
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CalTron: The speaker in the sky