#!/usr/bin/env python3

import numpy as np

vref = 0.8

def par(*rlist):
    s = 0
    for r in rlist:
        s += 1 / r
    return 1 / s

Rt = 18e3

Ra = 2.2e3
Rb = 4.7e3
Rc = 10e3
Rd = 22e3

Rs = [Ra, Rb, Rc, Rd]

Rbs = []
for i in range(1, 2**len(Rs)):
    rlist = []
    for k in range(len(Rs)):
        if i & (1 << k):
            rlist.append(Rs[k])
    Rbs.append(par(*rlist))

Rbs = np.array(Rbs)

vouts = vref * (Rbs + Rt) / Rbs

for vout in sorted(list(vouts)):
    print(f"{vout:6.2f} V")