c'est dit calogero
--------0------------------------0-2-----------0------
----0-2---3-2-0---0----------3-3---------2-2-3--------
----------------2---2-0--------------0----------------
--4---------------------4--------------4---------4----
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--------2-0-0---2-0-0---2--2-2-5-3-2--------0-0---0-0-0-------------------
----0-3-------3----------------------0-0-3--------------3-3-2-2-0---0-0---
----------------------2-------------------------------------------3-------
--4-----------------------------------------------------------------------
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si mimin la si x2 fa en case 2 x2
sol x2 mimin la ré x2 sol x2
mimin x2 fa en case 2 x2 si x2-3 ou +