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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def calc_qbb_v1(self):
 """Calculate the amount of base flow released from the soil. Required control parameters: |NHRU| |Lnk| |Beta| |FBeta| Required derived parameter: |WB| |WZ| Required state sequence: |BoWa| Calculated flux sequence: |QBB| Basic equations: :math:`Beta_{eff} = \\Bigl \\lbrace { {Beta \\ | \\ BoWa \\leq WZ} \\atop {Beta \\cdot (1+(FBeta-1)\\cdot\\frac{BoWa-WZ}{NFk-WZ}) \\|\\ BoWa > WZ} }` :math:`QBB = \\Bigl \\lbrace { {0 \\ | \\ BoWa \\leq WB} \\atop {Beta_{eff} \\cdot (BoWa - WB) \\|\\ BoWa > WB} }` Examples: For water and sealed areas, no base flow is calculated (see the first three HRUs of type |VERS|, |FLUSS|, and |SEE|). No principal distinction is made between the remaining land use classes (arable land |ACKER| has been selected for the last five HRUs arbitrarily):
 Note the time dependence of parameter |Beta|: beta(0.04) array([ 0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02, 0.02]) In the first example, the actual soil water content |BoWa| is set to low values. For values below the threshold |WB|, not percolation occurs. Above |WB| (but below |WZ|), |QBB| increases linearly by an amount defined by parameter |Beta|: qbb(0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.2, 0.2) Note that for the last two HRUs the same amount of base flow generation is determined, in spite of the fact that both exhibit different relative soil moistures. It is common to modify this "pure absolute dependency" to a "mixed absolute/relative dependency" through defining the values of parameter |WB| indirectly via parameter |RelWB|. In the second example, the actual soil water content |BoWa| is set to high values. For values below threshold |WZ|, the discussion above remains valid. For values above |WZ|, percolation shows a nonlinear behaviour when factor |FBeta| is set to values larger than one: qbb(0.0, 0.0, 0.0, 1.0, 1.2, 1.866667, 3.6, 7.6) """

    con = self.parameters.control.fastaccess
    der = self.parameters.derived.fastaccess
    flu = self.sequences.fluxes.fastaccess
    sta = self.sequences.states.fastaccess
    for k in range(con.nhru):
        if ((con.lnk[k] in (VERS, WASSER, FLUSS, SEE)) or
                (sta.bowa[k] <= der.wb[k]) or (con.nfk[k] <= 0.)):
            flu.qbb[k] = 0.
        elif sta.bowa[k] <= der.wz[k]:
            flu.qbb[k] = con.beta[k]*(sta.bowa[k]-der.wb[k])
        else:
            flu.qbb[k] = (con.beta[k]*(sta.bowa[k]-der.wb[k]) *
                          (1.+(con.fbeta[k]-1.)*((sta.bowa[k]-der.wz[k]) /
                                                 (con.nfk[k]-der.wz[k]))))