Closest hex to #aaeecc is #aec

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#
#aec

aaeecc

aaeecc

contains ae

0ae 1ae 2ae 3ae 4ae 5ae 6ae 7ae 8ae 9ae aae ae0 ae1 ae2 ae3 ae4 ae5 ae6 ae7 ae8 ae9 aea aeb aec aed aee aef bae cae dae eae fae

contains ec

0ec 1ec 2ec 3ec 4ec 5ec 6ec 7ec 8ec 9ec aec bec cec dec ec0 ec1 ec2 ec3 ec4 ec5 ec6 ec7 ec8 ec9 eca ecb ecc ecd ece ecf eec fec

contains ac

0ac 1ac 2ac 3ac 4ac 5ac 6ac 7ac 8ac 9ac aac ac0 ac1 ac2 ac3 ac4 ac5 ac6 ac7 ac8 ac9 aca acb acc acd ace acf bac cac dac eac fac