def cMers(tSeq, k):
    kFreq = {}
    for x in range(0, ((len(tSeq) - k) + 1)):
        kMer = tSeq[x:(x + k)]
        if (kMer in kFreq):
            kFreq[kMer] += 1
        else:
            kFreq[kMer] = 1
    return kFreq
def cMers(tSeq, k):
    kFreq = {}
    for x in range(0, ((len(tSeq) - k) + 1)):
        kMer = tSeq[x:(x + k)]
        if (kMer in kFreq):
            kFreq[kMer] += 1
        else:
            kFreq[kMer] = 1
    return kFreq