private function _sklon($nPad, $vzndx, $txt, $zivotne = false)
    {

        if ($vzndx < 0 || $vzndx >= \count($this->vzor)) {
            return '???';
        }

        $txt3 = $this->_xEdeten($txt);
        $kndx = $this->_isShoda($this->vzor[$vzndx][1], $txt3);
        if ($kndx < 0 || $nPad < 1 || $nPad > 14) {
            //8-14 je pro plural
            return '???';
        }
        if ($this->vzor[$vzndx][$nPad] === '?') {
            return '?';
        }

        if (!$this->isDbgMode & $nPad === 1) {
            // 1. pad nemenime
            $rv = $this->_xDetene($txt3);
        } else {
            $rv = $this->_leftStr($kndx, $txt3) . '-' . $this->_cmpFrm($this->vzor[$vzndx][$nPad]);
        }

        if ($this->isDbgMode) {
            //preskoceni filtrovani
            return $rv;
        }
        // Formatovani zivotneho sklonovani
        // - nalezeni pomlcky
        $length = mb_strlen($rv, 'UTF-8');
        for ($nnn = 0; $nnn < $length; $nnn++) {
            if (mb_substr($rv, $nnn, 1, 'UTF-8') === '-') {
                break;
            }
        }
        $ndx1 = $nnn;

        // - nalezeni lomitka
        for ($nnn = 0; $nnn < $length; $nnn++) {
            if (mb_substr($rv, $nnn, 1, 'UTF-8') === '/') {
                break;
            }
        }
        $ndx2 = $nnn;

        if ($ndx1 !== $length && $ndx2 !== $length) {
            if ($zivotne) {
                // 'text-xxx/yyy' -> 'textyyy'
                $rv = $this->_leftStr($ndx1, $rv) . $this->_rightStr($ndx2 + 1, $rv);
            } else {
                // 'text-xxx/yyy' -> 'text-xxx'
                $rv = $this->_leftStr($ndx2, $rv);
            }
            $length = mb_strlen($rv, 'UTF-8');
        }

        // vypusteni pomocnych znaku
        $txt3 = '';
        for ($nnn = 0; $nnn < $length; $nnn++) {
            $subStr = mb_substr($rv, $nnn, 1, 'UTF-8');
            if (!($subStr === '-' || $subStr === '/')) {
                $txt3 .= mb_substr($rv, $nnn, 1, 'UTF-8');
            }
        }
        $rv = $this->_xDetene($txt3);

        return $rv;
        //  return $this->LeftStr( $kndx, $txt ) + $this->vzor[$vzndx][$nPad];
    }