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American Sign Language:  ABCOS15

The letters and numbers
"ABCOS15" are the typical hand shapes formed by your non-dominant hand while signing.  Another term for non-dominant hand is your "base" hand.  For two-handed signs in which the two hands don't have the same handshape you will notice that almost without exception the non-dominant hand is in one of these shapes: "ABCOS15."  You see these shapes on the non-dominant signing hand when it is providing a stationary base for your "in-motion" dominant hand.

Also, if you are right handed and are doing a two-handed sign in which only one hand moves then the left hand will almost always be one of those handshapes (ABCOS15) and vice versa for left-handed people.


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