Buggy python submission (verdict: Runtime Error):
# coding=utf-8
from itertools import combinations


class Dice(object):

    def __init__(self, list_):
        self.label = list_

    def getLabel(self, i):
        return self.label[i - 1]

    def _rotateS(self):
        self.label = [self.getLabel(i) for i in [5, 1, 3, 4, 6, 2]]

    def _rotateN(self):
        self.label = [self.getLabel(i) for i in [2, 6, 3, 4, 1, 5]]

    def _rotateE(self):
        self.label = [self.getLabel(i) for i in [4, 2, 1, 6, 5, 3]]

    def _rotateW(self):
        self.label = [self.getLabel(i) for i in [3, 2, 6, 1, 5, 4]]

    def _spinPos(self):
        self.label = [self.getLabel(i) for i in [1, 4, 2, 5, 3, 6]]

    def _spinNeg(self):
        self.label = [self.getLabel(i) for i in [1, 3, 5, 2, 4, 6]]

    def rotate(self, rotates):
        for r in rotates:
            if r == 'S':
                self._rotateS()
            elif r == 'N':
                self._rotateN()
            elif r == 'E':
                self._rotateE()
            elif r == 'W':
                self._rotateW()
            elif r == 'T':
                self._spinPos()
            elif r == 'B':
                self._spinNeg()

    def matchTopFront(self, top, front):
        try:
            iTop = self.label.index(top) + 1
            topRot = {1: '', 2: 'N', 3: 'W', 4: 'E', 5: 'S', 6: 'SS'}
            self.rotate(topRot[iTop])

            iFront = self.label.index(front) + 1
            frontRot = {2: '', 3: 'B', 4: 'T', 5: 'TT'}
            self.rotate(frontRot[iFront])
            return True
        except KeyError:
            return False

    def copy(self):
        return Dice(self.label[:])

    def _equalWithOverlap(self, other):
        # ?????¢???????????¢?????\????????§6????????????
        for rs in ['', 'S', 'N', 'E', 'W', 'SS']:
            tmp = self.copy()
            for r in rs:
                tmp.rotate(r)
            # ?????¢????????¢????????§??????
            top = tmp.getLabel(1) == other.getLabel(1)
            bottom = tmp.getLabel(6) == other.getLabel(6)
            # ??´??¢?????????????????????????????????????????¢??????????????????????????´??????????????°??????
            # top and bottom ???False??????????????????????????????????????§?????¢??°?????????

            def _side():
                result, n = False, 3
                while not result and n > 0:
                    if tmp.label[1:5] == other.label[1:5]:
                        result = True
                    else:
                        tmp.rotate('T')
                        n -= 1
                return result

            if top and bottom and _side():
                return True
        else:
            return False

    def __eq__(self, other):
        # ????????????????????????????????´?????????????????´???
        if set(self.label) != set(other.label):
            return False
        # ???????????????????????´???
        elif len(self.label) == len(set(self.label)):
                if other.matchTopFront(self.getLabel(1), self.getLabel(2)):
                    return True if self.label == other.label else False
                else:
                    return False
        # ???????????????????????´???
        else:
            d1 = Dice(face1)
            d2 = Dice(face2)
            return True if d1._equalWithOverlap(d2) else False


def main():
    n = input()
    faces = [map(int, raw_input().split()) for _ in xrange(n)]
    for f1, f2 in combinations(faces, 2):
        if f1 == f2 or Dice(f1) == Dice(f2):
            print 'No'
            break
    else:
        print 'Yes'


if __name__ == '__main__':
    main()

Fixed submission:
# coding=utf-8
from itertools import combinations


class Dice(object):

    def __init__(self, list_):
        self.label = list_

    def getLabel(self, i):
        return self.label[i - 1]

    def _rotateS(self):
        self.label = [self.getLabel(i) for i in [5, 1, 3, 4, 6, 2]]

    def _rotateN(self):
        self.label = [self.getLabel(i) for i in [2, 6, 3, 4, 1, 5]]

    def _rotateE(self):
        self.label = [self.getLabel(i) for i in [4, 2, 1, 6, 5, 3]]

    def _rotateW(self):
        self.label = [self.getLabel(i) for i in [3, 2, 6, 1, 5, 4]]

    def _spinPos(self):
        self.label = [self.getLabel(i) for i in [1, 4, 2, 5, 3, 6]]

    def _spinNeg(self):
        self.label = [self.getLabel(i) for i in [1, 3, 5, 2, 4, 6]]

    def rotate(self, rotates):
        for r in rotates:
            if r == 'S':
                self._rotateS()
            elif r == 'N':
                self._rotateN()
            elif r == 'E':
                self._rotateE()
            elif r == 'W':
                self._rotateW()
            elif r == 'T':
                self._spinPos()
            elif r == 'B':
                self._spinNeg()

    def matchTopFront(self, top, front):
        iTop = self.label.index(top) + 1
        topRot = {1: '', 2: 'N', 3: 'W', 4: 'E', 5: 'S', 6: 'SS'}
        self.rotate(topRot[iTop])

        iFront = self.label.index(front) + 1
        frontRot = {2: '', 3: 'B', 4: 'T', 5: 'TT'}
        # top, front ???????????´???????????¢??????????????´??????iFront???1???6?????????
        try:
            self.rotate(frontRot[iFront])
            return True
        except KeyError:
            return False

    def copy(self):
        return Dice(self.label[:])

    def _equalWithoutOverlap(self, other):
        if other.matchTopFront(self.getLabel(1), self.getLabel(2)):
            return True if self.label == other.label else False
        else:
            return False

    def _equalWithOverlap(self, other):
        # ?????¢???????????¢?????\????????§6????????????
        for rs in ['', 'S', 'N', 'E', 'W', 'SS']:
            tmp = self.copy()
            for r in rs:
                tmp.rotate(r)
            # ?????¢????????¢????????§??????
            top = tmp.getLabel(1) == other.getLabel(1)
            bottom = tmp.getLabel(6) == other.getLabel(6)

            # ??´??¢?????????????????????????????????????????¢??????????????????????????´??????????????°??????
            # top and bottom ???False??????????????????????????????????????§?????¢??°?????????
            def _side():
                result, n = False, 3
                while not result and n > 0:
                    if tmp.label[1:5] == other.label[1:5]:
                        result = True
                    else:
                        tmp.rotate('T')
                        n -= 1
                return result

            if top and bottom and _side():
                return True
        else:
            return False

    def __eq__(self, other):
        # ????????????????????????????????´?????????????????´???
        if set(self.label) != set(other.label):
            return False
        # ???????????????????????´???
        elif len(self.label) == len(set(self.label)):
            return self._equalWithoutOverlap(other)
        # ???????????????????????´???
        else:
            return self._equalWithOverlap(other)


def main():
    n = input()
    faces = [map(int, raw_input().split()) for _ in xrange(n)]
    for f1, f2 in combinations(faces, 2):
        if f1 == f2 or Dice(f1) == Dice(f2):
            print 'No'
            break
    else:
        print 'Yes'


if __name__ == '__main__':
    main()