25 abBCBD abBCBND aBCbBCcBNBDN abBCcBCdBNBNBD abBCcBCdBNBNBDFP abBCcBCdBNBNBDC abcBBCcBCdBCBNDNN abcdeBCNBBBBCcBCdBNBD abcdefBCBCNNBBBBBCcBCdBCeBNBNBD abcdefBCBCNNBBBBBCcBCdBCeBNBNBDFP aBCbcBCdBBNDN aBCbcBCdBBNDBNe aaaaaaaaaaBCBCBNNBBBBBBBBBCBCbbbbbbbb fBCNaBBDFBFuBC78g tBCNgi76BCBF7BiB1CNCkx aF aBB aN aP aD aBD aC abBBCaNBC abcdBCNBBBBCBCaaaBBBBNDFFFPPD aaBBCbbBCccBBBCddBBBNND