Closest hex to #aacbec is #ace

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#
#ace

aacbec

aacbec

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

contains ce

0ce 1ce 2ce 3ce 4ce 5ce 6ce 7ce 8ce 9ce ace bce cce ce0 ce1 ce2 ce3 ce4 ce5 ce6 ce7 ce8 ce9 cea ceb cec ced cee cef dce ece fce

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