13+13+14+15+16+17+12+14+15+16+27
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13+13+14+15+16+17+12+14+15+16+27
=>(13+13) +(14+15) + (16+17) + (12+14) + (15+16) + (27)
=>(26) + (29) + (33) + (26) + (31) + (27)
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